pym/_emerge/help.py

   1 # Copyright 1999-2011 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 from __future__ import print_function
   5
   6 from portage.const import _ENABLE_DYN_LINK_MAP
   7 from portage.output import bold, turquoise, green
   8
   9 def shorthelp():
  10         print(bold("emerge:")+" the other white meat (command-line interface to the Portage system)")
  11         print(bold("Usage:"))
  12         print("   "+turquoise("emerge")+" [ "+green("options")+" ] [ "+green("action")+" ] [ "+turquoise("ebuild")+" | "+turquoise("tbz2")+" | "+turquoise("file")+" | "+turquoise("@set")+" | "+turquoise("atom")+" ] [ ... ]")
  13         print("   "+turquoise("emerge")+" [ "+green("options")+" ] [ "+green("action")+" ] < "+turquoise("system")+" | "+turquoise("world")+" >")
  14         print("   "+turquoise("emerge")+" < "+turquoise("--sync")+" | "+turquoise("--metadata")+" | "+turquoise("--info")+" >")
  15         print("   "+turquoise("emerge")+" "+turquoise("--resume")+" [ "+green("--pretend")+" | "+green("--ask")+" | "+green("--skipfirst")+" ]")
  16         print("   "+turquoise("emerge")+" "+turquoise("--help")+" [ "+green("--verbose")+" ] ")
  17         print(bold("Options:")+" "+green("-")+"["+green("abBcCdDefgGhjkKlnNoOpPqrsStuvV")+"]")
  18         print("          [ " + green("--color")+" < " + turquoise("y") + " | "+ turquoise("n")+" >            ] [ "+green("--columns")+"    ]")
  19         print("          [ "+green("--complete-graph")+"             ] [ "+green("--deep")+"       ]")
  20         print("          [ "+green("--jobs") + " " + turquoise("JOBS")+" ] [ "+green("--keep-going")+" ] [ " + green("--load-average")+" " + turquoise("LOAD") + "            ]")
  21         print("          [ "+green("--newuse")+"    ] [ "+green("--noconfmem")+"  ] [ "+green("--nospinner")+"  ]")
  22         print("          [ "+green("--oneshot")+"   ] [ "+green("--onlydeps")+"   ]")
  23         print("          [ "+green("--reinstall ")+turquoise("changed-use")+"      ] [ " + green("--with-bdeps")+" < " + turquoise("y") + " | "+ turquoise("n")+" >         ]")
  24         print(bold("Actions:")+"  [ "+green("--depclean")+" | "+green("--list-sets")+" | "+green("--search")+" | "+green("--sync")+" | "+green("--version")+"        ]")
  25
  26 def help(myopts, havecolor=1):
  27         # TODO: Implement a wrap() that accounts for console color escape codes.
  28         from textwrap import wrap
  29         desc_left_margin = 14
  30         desc_indent = desc_left_margin * " "
  31         desc_width = 80 - desc_left_margin - 5
  32         if "--verbose" not in myopts:
  33                 shorthelp()
  34                 print()
  35                 print("   For more help try 'emerge --help --verbose' or consult the man page.")
  36         else:
  37                 shorthelp()
  38                 print()
  39                 print(turquoise("Help (this screen):"))
  40                 print("       "+green("--help")+" ("+green("-h")+" short option)")
  41                 print("              Displays this help; an additional argument (see above) will tell")
  42                 print("              emerge to display detailed help.")
  43                 print()
  44                 print(turquoise("Actions:"))
  45                 print("       "+green("--clean"))
  46                 print("              Cleans the system by removing outdated packages which will not")
  47                 print("              remove functionalities or prevent your system from working.")
  48                 print("              The arguments can be in several different formats :")
  49                 print("              * world ")
  50                 print("              * system or")
  51                 print("              * 'dependency specification' (in single quotes is best.)")
  52                 print("              Here are a few examples of the dependency specification format:")
  53                 print("              "+bold("binutils")+" matches")
  54                 print("                  binutils-2.11.90.0.7 and binutils-2.11.92.0.12.3-r1")
  55                 print("              "+bold("sys-devel/binutils")+" matches")
  56                 print("                  binutils-2.11.90.0.7 and binutils-2.11.92.0.12.3-r1")
  57                 print("              "+bold(">sys-devel/binutils-2.11.90.0.7")+" matches")
  58                 print("                  binutils-2.11.92.0.12.3-r1")
  59                 print("              "+bold(">=sys-devel/binutils-2.11.90.0.7")+" matches")
  60                 print("                  binutils-2.11.90.0.7 and binutils-2.11.92.0.12.3-r1")
  61                 print("              "+bold("<=sys-devel/binutils-2.11.92.0.12.3-r1")+" matches")
  62                 print("                  binutils-2.11.90.0.7 and binutils-2.11.92.0.12.3-r1")
  63                 print()
  64                 print("       "+green("--config"))
  65                 print("              Runs package-specific operations that must be executed after an")
  66                 print("              emerge process has completed.  This usually entails configuration")
  67                 print("              file setup or other similar setups that the user may wish to run.")
  68                 print()
  69                 print("       "+green("--depclean")+" ("+green("-c")+" short option)")
  70
  71                 paragraph = "Cleans the system by removing packages that are " + \
  72                 "not associated with explicitly merged packages. Depclean works " + \
  73                 "by creating the full dependency tree from the " + \
  74                 "@world set, then comparing it to installed packages. Packages " + \
  75                 "installed, but not part of the dependency tree, will be " + \
  76                 "uninstalled by depclean. See --with-bdeps for behavior with " + \
  77                 "respect to build time dependencies that are not strictly " + \
  78                 "required. Packages that are part of the world set will " + \
  79                 "always be kept. They can be manually added to this set with " + \
  80                 "emerge --noreplace <atom>. As a safety measure, depclean " + \
  81                 "will not remove any packages unless *all* required dependencies " + \
  82                 "have been resolved. As a consequence, it is often necessary to " + \
  83                 "run emerge --update --newuse --deep @world " + \
  84                 "prior to depclean."
  85
  86                 for line in wrap(paragraph, desc_width):
  87                         print(desc_indent + line)
  88                 print()
  89
  90                 paragraph =  "WARNING: Inexperienced users are advised to use " + \
  91                 "--pretend with this option in order to see a preview of which " + \
  92                 "packages will be uninstalled. Always study the list of packages " + \
  93                 "to be cleaned for any obvious mistakes. Note that packages " + \
  94                 "listed in package.provided (see portage(5)) may be removed by " + \
  95                 "depclean, even if they are part of the world set."
  96
  97                 paragraph += " Also note that " + \
  98                         "depclean may break link level dependencies"
  99
 100                 if _ENABLE_DYN_LINK_MAP:
 101                         paragraph += ", especially when the " + \
 102                                 "--depclean-lib-check option is disabled"
 103
 104                 paragraph += ". Thus, it is " + \
 105                         "recommended to use a tool such as revdep-rebuild(1) " + \
 106                         "in order to detect such breakage."
 107
 108                 for line in wrap(paragraph, desc_width):
 109                         print(desc_indent + line)
 110                 print()
 111
 112                 paragraph = "Depclean serves as a dependency aware version of " + \
 113                         "--unmerge. When given one or more atoms, it will unmerge " + \
 114                         "matched packages that have no reverse dependencies. Use " + \
 115                         "--depclean together with --verbose to show reverse dependencies."
 116
 117                 for line in wrap(paragraph, desc_width):
 118                         print(desc_indent + line)
 119                 print()
 120                 print("       " + green("--deselect") + " [ %s | %s ]" % \
 121                         (turquoise("y"), turquoise("n")))
 122
 123                 paragraph = \
 124                         "Remove atoms and/or sets from the world file. This action is implied " + \
 125                         "by uninstall actions, including --depclean, " + \
 126                         "--prune and --unmerge. Use --deselect=n " + \
 127                         "in order to prevent uninstall actions from removing " + \
 128                         "atoms from the world file."
 129
 130                 for line in wrap(paragraph, desc_width):
 131                         print(desc_indent + line)
 132                 print()
 133                 print("       " + green("--ignore-default-opts"))
 134
 135                 paragraph = \
 136                         "Causes EMERGE_DEFAULT_OPTS (see make.conf(5)) to be ignored."
 137
 138                 for line in wrap(paragraph, desc_width):
 139                         print(desc_indent + line)
 140                 print()
 141                 print("       "+green("--info"))
 142                 print("              Displays important portage variables that will be exported to")
 143                 print("              ebuild.sh when performing merges. This information is useful")
 144                 print("              for bug reports and verification of settings. All settings in")
 145                 print("              make.{conf,globals,defaults} and the environment show up if")
 146                 print("              run with the '--verbose' flag.")
 147                 print()
 148                 print("       " + green("--list-sets"))
 149                 paragraph = "Displays a list of available package sets."
 150
 151                 for line in wrap(paragraph, desc_width):
 152                         print(desc_indent + line)
 153                 print()
 154                 print("       "+green("--metadata"))
 155                 print("              Transfers metadata cache from ${PORTDIR}/metadata/cache/ to")
 156                 print("              /var/cache/edb/dep/ as is normally done on the tail end of an")
 157                 print("              rsync update using " + bold("emerge --sync") + ". This process populates the")
 158                 print("              cache database that portage uses for pre-parsed lookups of")
 159                 print("              package data.  It does not populate cache for the overlays")
 160                 print("              listed in PORTDIR_OVERLAY.  In order to generate cache for")
 161                 print("              overlays, use " + bold("--regen") + ".")
 162                 print()
 163                 print("       "+green("--prune")+" ("+green("-P")+" short option)")
 164                 print("              "+turquoise("WARNING: This action can remove important packages!"))
 165                 paragraph = "Removes all but the highest installed version of a " + \
 166                         "package from your system. Use --prune together with " + \
 167                         "--verbose to show reverse dependencies or with --nodeps " + \
 168                         "to ignore all dependencies. "
 169
 170                 for line in wrap(paragraph, desc_width):
 171                         print(desc_indent + line)
 172                 print()
 173                 print("       "+green("--regen"))
 174                 print("              Causes portage to check and update the dependency cache of all")
 175                 print("              ebuilds in the portage tree. This is not recommended for rsync")
 176                 print("              users as rsync updates the cache using server-side caches.")
 177                 print("              Rsync users should simply 'emerge --sync' to regenerate.")
 178                 desc = "In order to specify parallel --regen behavior, use "+ \
 179                         "the ---jobs and --load-average options. If you would like to " + \
 180                         "generate and distribute cache for use by others, use egencache(1)."
 181                 for line in wrap(desc, desc_width):
 182                         print(desc_indent + line)
 183                 print()
 184                 print("       "+green("--resume")+" ("+green("-r")+" short option)")
 185                 print("              Resumes the most recent merge list that has been aborted due to an")
 186                 print("              error. Please note that this operation will only return an error")
 187                 print("              on failure. If there is nothing for portage to do, then portage")
 188                 print("              will exit with a message and a success condition. A resume list")
 189                 print("              will persist until it has been completed in entirety or until")
 190                 print("              another aborted merge list replaces it. The resume history is")
 191                 print("              capable of storing two merge lists. After one resume list")
 192                 print("              completes, it is possible to invoke --resume once again in order")
 193                 print("              to resume an older list.")
 194                 print()
 195                 print("       "+green("--search")+" ("+green("-s")+" short option)")
 196                 print("              Searches for matches of the supplied string in the current local")
 197                 print("              portage tree. By default emerge uses a case-insensitive simple ")
 198                 print("              search, but you can enable a regular expression search by ")
 199                 print("              prefixing the search string with %.")
 200                 print("              Prepending the expression with a '@' will cause the category to")
 201                 print("              be included in the search.")
 202                 print("              A few examples:")
 203                 print("              "+bold("emerge --search libc"))
 204                 print("                  list all packages that contain libc in their name")
 205                 print("              "+bold("emerge --search '%^kde'"))
 206                 print("                  list all packages starting with kde")
 207                 print("              "+bold("emerge --search '%gcc$'"))
 208                 print("                  list all packages ending with gcc")
 209                 print("              "+bold("emerge --search '%@^dev-java.*jdk'"))
 210                 print("                  list all available Java JDKs")
 211                 print()
 212                 print("       "+green("--searchdesc")+" ("+green("-S")+" short option)")
 213                 print("              Matches the search string against the description field as well")
 214                 print("              the package's name. Take caution as the descriptions are also")
 215                 print("              matched as regular expressions.")
 216                 print("                emerge -S html")
 217                 print("                emerge -S applet")
 218                 print("                emerge -S 'perl.*module'")
 219                 print()
 220                 print("       "+green("--sync"))
 221                 desc = "This updates the portage tree that is located in the " + \
 222                         "directory that the PORTDIR variable refers to (default " + \
 223                         "location is /usr/portage). The SYNC variable specifies " + \
 224                         "the remote URI from which files will be synchronized. " + \
 225                         "The PORTAGE_SYNC_STALE variable configures " + \
 226                         "warnings that are shown when emerge --sync has not " + \
 227                         "been executed recently."
 228                 for line in wrap(desc, desc_width):
 229                         print(desc_indent + line)
 230                 print()
 231                 print(desc_indent + turquoise("WARNING:"))
 232                 desc = "The emerge --sync action will modify and/or delete " + \
 233                         "files located inside the directory that the PORTDIR " + \
 234                         "variable refers to (default location is /usr/portage). " + \
 235                         "For more information, see the PORTDIR documentation in " + \
 236                         "the make.conf(5) man page."
 237                 for line in wrap(desc, desc_width):
 238                         print(desc_indent + line)
 239                 print()
 240                 print(desc_indent + green("NOTE:"))
 241                 desc = "The emerge-webrsync program will download the entire " + \
 242                         "portage tree as a tarball, which is much faster than emerge " + \
 243                         "--sync for first time syncs."
 244                 for line in wrap(desc, desc_width):
 245                         print(desc_indent + line)
 246                 print()
 247                 print("       "+green("--unmerge")+" ("+green("-C")+" short option)")
 248                 print("              "+turquoise("WARNING: This action can remove important packages!"))
 249                 print("              Removes all matching packages. This does no checking of")
 250                 print("              dependencies, so it may remove packages necessary for the proper")
 251                 print("              operation of your system. Its arguments can be atoms or")
 252                 print("              ebuilds. For a dependency aware version of --unmerge, use")
 253                 print("              --depclean or --prune.")
 254                 print()
 255                 print("       "+green("--version")+" ("+green("-V")+" short option)")
 256                 print("              Displays the currently installed version of portage along with")
 257                 print("              other information useful for quick reference on a system. See")
 258                 print("              "+bold("emerge info")+" for more advanced information.")
 259                 print()
 260                 print(turquoise("Options:"))
 261                 print("       "+green("--accept-properties=ACCEPT_PROPERTIES"))
 262                 desc = "This option temporarily overrides the ACCEPT_PROPERTIES " + \
 263                         "variable. The ACCEPT_PROPERTIES variable is incremental, " + \
 264                         "which means that the specified setting is appended to the " + \
 265                         "existing value from your configuration. The special -* " + \
 266                         "token can be used to discard the existing configuration " + \
 267                         "value and start fresh. See the MASKED PACKAGES section " + \
 268                         "and make.conf(5) for more information about " + \
 269                         "ACCEPT_PROPERTIES. A typical usage example for this option " + \
 270                         "would be to use --accept-properties=-interactive to " + \
 271                         "temporarily mask interactive packages. With default " + \
 272                         "configuration, this would result in an effective " + \
 273                         "ACCEPT_PROPERTIES value of \"* -interactive\"."
 274                 for line in wrap(desc, desc_width):
 275                         print(desc_indent + line)
 276                 print()
 277                 print("       "+green("--alphabetical"))
 278                 print("              When displaying USE and other flag output, combines the enabled")
 279                 print("              and disabled flags into a single list and sorts it alphabetically.")
 280                 print("              With this option, output such as USE=\"dar -bar -foo\" will instead")
 281                 print("              be displayed as USE=\"-bar dar -foo\"")
 282                 print()
 283                 print("       " + green("--ask") + \
 284                         " [ %s | %s ] (%s short option)" % \
 285                         (turquoise("y"), turquoise("n"), green("-a")))
 286                 desc = "Before performing the action, display what will take place (server info for " + \
 287                         "--sync, --pretend output for merge, and so forth), then ask " + \
 288                         "whether to proceed with the action or abort.  Using --ask is more " + \
 289                         "efficient than using --pretend and then executing the same command " + \
 290                         "without --pretend, as dependencies will only need to be calculated once. " + \
 291                         "WARNING: If the \"Enter\" key is pressed at the prompt (with no other input), " + \
 292                         "it is interpreted as acceptance of the first choice.  Note that the input " + \
 293                         "buffer is not cleared prior to the prompt, so an accidental press of the " + \
 294                         "\"Enter\" key at any time prior to the prompt will be interpreted as a choice! " + \
 295                         "Use the --ask-enter-invalid option if you want a single \"Enter\" key " + \
 296                         "press to be interpreted as invalid input."
 297                 for line in wrap(desc, desc_width):
 298                         print(desc_indent + line)
 299                 print()
 300                 print("        " + green("--ask-enter-invalid"))
 301                 desc = "When used together with the --ask option, " + \
 302                         "interpret a single \"Enter\" key press as " + \
 303                         "invalid input. This helps prevent accidental " + \
 304                         "acceptance of the first choice. This option is " + \
 305                         "intended to be set in the make.conf(5) " + \
 306                         "EMERGE_DEFAULT_OPTS variable."
 307                 for line in wrap(desc, desc_width):
 308                         print(desc_indent + line)
 309                 print()
 310                 print("       " + green("--autounmask") + " [ %s | %s ]" % \
 311                         (turquoise("y"), turquoise("n")))
 312                 desc = "Automatically unmask packages. If any configuration " + \
 313                         "changes are required, then they will be displayed " + \
 314                         "after the merge list and emerge will immediately " + \
 315                         "abort. If the displayed configuration changes are " + \
 316                         "satisfactory, you should copy and paste them into " + \
 317                         "the specified configuration file(s). Currently, " + \
 318                         "this only works for unstable KEYWORDS masks, " + \
 319                         "LICENSE masks, and package.use settings."
 320                 for line in wrap(desc, desc_width):
 321                         print(desc_indent + line)
 322                 print()
 323                 print("       " + green("--backtrack") + " " + turquoise("COUNT"))
 324                 desc = "Specifies an integer number of times to backtrack if " + \
 325                         "dependency calculation fails due to a conflict or an " + \
 326                         "unsatisfied dependency (default: '10')."
 327                 for line in wrap(desc, desc_width):
 328                         print(desc_indent + line)
 329                 print()
 330                 print("       " + green("--binpkg-respect-use") + " [ %s | %s ]" % \
 331                         (turquoise("y"), turquoise("n")))
 332                 desc = "Tells emerge to ignore binary packages if their use flags" + \
 333                         " don't match the current configuration. (default: 'n')"
 334                 for line in wrap(desc, desc_width):
 335                         print(desc_indent + line)
 336                 print()
 337                 print("       " + green("--buildpkg") + \
 338                         " [ %s | %s ] (%s short option)" % \
 339                         (turquoise("y"), turquoise("n"), green("-b")))
 340                 desc = "Tells emerge to build binary packages for all ebuilds processed in" + \
 341                         " addition to actually merging the packages. Useful for maintainers" + \
 342                         " or if you administrate multiple Gentoo Linux systems (build once," + \
 343                         " emerge tbz2s everywhere) as well as disaster recovery. The package" + \
 344                         " will be created in the" + \
 345                         " ${PKGDIR}/All directory. An alternative for already-merged" + \
 346                         " packages is to use quickpkg(1) which creates a tbz2 from the" + \
 347                         " live filesystem."
 348                 for line in wrap(desc, desc_width):
 349                         print(desc_indent + line)
 350                 print()
 351                 print("       "+green("--buildpkgonly")+" ("+green("-B")+" short option)")
 352                 print("              Creates a binary package, but does not merge it to the")
 353                 print("              system. This has the restriction that unsatisfied dependencies")
 354                 print("              must not exist for the desired package as they cannot be used if")
 355                 print("              they do not exist on the system.")
 356                 print()
 357                 print("       " + green("--changed-use"))
 358                 desc = "This is an alias for --reinstall=changed-use."
 359                 for line in wrap(desc, desc_width):
 360                         print(desc_indent + line)
 361                 print()
 362                 print("       "+green("--changelog")+" ("+green("-l")+" short option)")
 363                 print("              When pretending, also display the ChangeLog entries for packages")
 364                 print("              that will be upgraded.")
 365                 print()
 366                 print("       "+green("--color") + " < " + turquoise("y") + " | "+ turquoise("n")+" >")
 367                 print("              Enable or disable color output. This option will override NOCOLOR")
 368                 print("              (see make.conf(5)) and may also be used to force color output when")
 369                 print("              stdout is not a tty (by default, color is disabled unless stdout")
 370                 print("              is a tty).")
 371                 print()
 372                 print("       "+green("--columns"))
 373                 print("              Display the pretend output in a tabular form. Versions are")
 374                 print("              aligned vertically.")
 375                 print()
 376                 print("       "+green("--complete-graph") + " [ %s | %s ]" % \
 377                         (turquoise("y"), turquoise("n")))
 378                 desc = "This causes emerge to consider the deep dependencies of all" + \
 379                         " packages from the world set. With this option enabled," + \
 380                         " emerge will bail out if it determines that the given operation will" + \
 381                         " break any dependencies of the packages that have been added to the" + \
 382                         " graph. Like the --deep option, the --complete-graph" + \
 383                         " option will significantly increase the time taken for dependency" + \
 384                         " calculations. Note that, unlike the --deep option, the" + \
 385                         " --complete-graph option does not cause any more packages to" + \
 386                         " be updated than would have otherwise " + \
 387                         "been updated with the option disabled. " + \
 388                         "Using --with-bdeps=y together with --complete-graph makes " + \
 389                         "the graph as complete as possible."
 390                 for line in wrap(desc, desc_width):
 391                         print(desc_indent + line)
 392                 print()
 393                 print("       "+green("--config-root=DIR"))
 394                 desc = "Set the PORTAGE_CONFIGROOT environment variable " + \
 395                         "which is documented in the emerge(1) man page."
 396                 for line in wrap(desc, desc_width):
 397                         print(desc_indent + line)
 398                 print()
 399                 print("       "+green("--debug")+" ("+green("-d")+" short option)")
 400                 print("              Tell emerge to run the ebuild command in --debug mode. In this")
 401                 print("              mode, the bash build environment will run with the -x option,")
 402                 print("              causing it to output verbose debug information print to stdout.")
 403                 print("              --debug is great for finding bash syntax errors as providing")
 404                 print("              very verbose information about the dependency and build process.")
 405                 print()
 406                 print("       "+green("--deep") + " " + turquoise("[DEPTH]") + \
 407                         " (" + green("-D") + " short option)")
 408                 print("              This flag forces emerge to consider the entire dependency tree of")
 409                 print("              packages, instead of checking only the immediate dependencies of")
 410                 print("              the packages. As an example, this catches updates in libraries")
 411                 print("              that are not directly listed in the dependencies of a package.")
 412                 print("              Also see --with-bdeps for behavior with respect to build time")
 413                 print("              dependencies that are not strictly required.")
 414                 print()
 415
 416                 if _ENABLE_DYN_LINK_MAP:
 417                         print("       " + green("--depclean-lib-check") + " [ %s | %s ]" % \
 418                                 (turquoise("y"), turquoise("n")))
 419                         desc = "Account for library link-level dependencies during " + \
 420                                 "--depclean and --prune actions. This " + \
 421                                 "option is enabled by default. In some cases this can " + \
 422                                 "be somewhat time-consuming. This option is ignored " + \
 423                                 "when FEATURES=\"preserve-libs\" is enabled in " + \
 424                                 "make.conf(5), since any libraries that have " + \
 425                                 "consumers will simply be preserved."
 426                         for line in wrap(desc, desc_width):
 427                                 print(desc_indent + line)
 428                         print()
 429
 430                 print("       "+green("--emptytree")+" ("+green("-e")+" short option)")
 431                 desc = "Reinstalls target atoms and their entire deep " + \
 432                         "dependency tree, as though no packages are currently " + \
 433                         "installed. You should run this with --pretend " + \
 434                         "first to make sure the result is what you expect."
 435                 for line in wrap(desc, desc_width):
 436                         print(desc_indent + line)
 437                 print()
 438                 print("       " + green("--exclude") + " " + turquoise("ATOMS"))
 439                 desc = "A space separated list of package names or slot atoms. " + \
 440                         "Emerge won't  install any ebuild or binary package that " + \
 441                         "matches any of the given package atoms."
 442                 for line in wrap(desc, desc_width):
 443                         print(desc_indent + line)
 444                 print()
 445                 print("       " + green("--fail-clean") + " [ %s | %s ]" % \
 446                         (turquoise("y"), turquoise("n")))
 447                 desc = "Clean up temporary files after a build failure. This is " + \
 448                         "particularly useful if you have PORTAGE_TMPDIR on " + \
 449                         "tmpfs. If this option is enabled, you probably also want " + \
 450                         "to enable PORT_LOGDIR (see make.conf(5)) in " + \
 451                         "order to save the build log."
 452                 for line in wrap(desc, desc_width):
 453                         print(desc_indent + line)
 454                 print()
 455                 print("       "+green("--fetchonly")+" ("+green("-f")+" short option)")
 456                 print("              Instead of doing any package building, just perform fetches for")
 457                 print("              all packages (main package as well as all dependencies.) When")
 458                 print("              used in combination with --pretend all the SRC_URIs will be")
 459                 print("              displayed multiple mirrors per line, one line per file.")
 460                 print()
 461                 print("       "+green("--fetch-all-uri")+" ("+green("-F")+" short option)")
 462                 print("              Same as --fetchonly except that all package files, including those")
 463                 print("              not required to build the package, will be processed.")
 464                 print()
 465                 print("       " + green("--getbinpkg") + \
 466                         " [ %s | %s ] (%s short option)" % \
 467                         (turquoise("y"), turquoise("n"), green("-g")))
 468                 print("              Using the server and location defined in PORTAGE_BINHOST, portage")
 469                 print("              will download the information from each binary file there and it")
 470                 print("              will use that information to help build the dependency list. This")
 471                 print("              option implies '-k'. (Use -gK for binary-only merging.)")
 472                 print()
 473                 print("       " + green("--getbinpkgonly") + \
 474                         " [ %s | %s ] (%s short option)" % \
 475                         (turquoise("y"), turquoise("n"), green("-G")))
 476                 print("              This option is identical to -g, as above, except it will not use")
 477                 print("              ANY information from the local machine. All binaries will be")
 478                 print("              downloaded from the remote server without consulting packages")
 479                 print("              existing in the packages directory.")
 480                 print()
 481                 print("       " + green("--jobs") + " " + turquoise("[JOBS]") + " ("+green("-j")+" short option)")
 482                 desc = "Specifies the number of packages " + \
 483                         "to build simultaneously. If this option is " + \
 484                         "given without an argument, emerge will not " + \
 485                         "limit the number of jobs that " + \
 486                         "can run simultaneously. Also see " + \
 487                         "the related --load-average option. " + \
 488                         "Note that interactive packages currently force a setting " + \
 489                         "of --jobs=1. This issue can be temporarily avoided " + \
 490                         "by specifying --accept-properties=-interactive."
 491                 for line in wrap(desc, desc_width):
 492                         print(desc_indent + line)
 493                 print()
 494                 print("       " + green("--keep-going") + " [ %s | %s ]" % \
 495                         (turquoise("y"), turquoise("n")))
 496                 desc = "Continue as much as possible after " + \
 497                         "an error. When an error occurs, " + \
 498                         "dependencies are recalculated for " + \
 499                         "remaining packages and any with " + \
 500                         "unsatisfied dependencies are " + \
 501                         "automatically dropped. Also see " + \
 502                         "the related --skipfirst option."
 503                 for line in wrap(desc, desc_width):
 504                         print(desc_indent + line)
 505                 print()
 506                 print("       " + green("--load-average") + " " + turquoise("LOAD"))
 507                 desc = "Specifies that no new builds should " + \
 508                         "be started if there are other builds " + \
 509                         "running and the load average is at " + \
 510                         "least LOAD (a floating-point number). " + \
 511                         "This option is recommended for use " + \
 512                         "in combination with --jobs in " + \
 513                         "order to avoid excess load. See " + \
 514                         "make(1) for information about " + \
 515                         "analogous options that should be " + \
 516                         "configured via MAKEOPTS in " + \
 517                         "make.conf(5)."
 518                 for line in wrap(desc, desc_width):
 519                         print(desc_indent + line)
 520                 print()
 521                 print("       " + green("--misspell-suggestions") + " < %s | %s >" % \
 522                         (turquoise("y"), turquoise("n")))
 523                 desc = "Enable or disable misspell suggestions. By default, " + \
 524                         "emerge will show a list of packages with similar names " + \
 525                         "when a package doesn't exist. The EMERGE_DEFAULT_OPTS " + \
 526                         "variable may be used to disable this option by default"
 527                 for line in wrap(desc, desc_width):
 528                         print(desc_indent + line)
 529                 print()
 530                 print("       "+green("--newuse")+" ("+green("-N")+" short option)")
 531                 desc = "Tells emerge to include installed packages where USE " + \
 532                         "flags have changed since compilation. This option " + \
 533                         "also implies the --selective option. If you would " + \
 534                         "like to skip rebuilds for which disabled flags have " + \
 535                         "been added to or removed from IUSE, see the related " + \
 536                         "--reinstall=changed-use option."
 537                 for line in wrap(desc, desc_width):
 538                         print(desc_indent + line)
 539                 print()
 540                 print("       "+green("--noconfmem"))
 541                 print("              Portage keeps track of files that have been placed into")
 542                 print("              CONFIG_PROTECT directories, and normally it will not merge the")
 543                 print("              same file more than once, as that would become annoying. This")
 544                 print("              can lead to problems when the user wants the file in the case")
 545                 print("              of accidental deletion. With this option, files will always be")
 546                 print("              merged to the live fs instead of silently dropped.")
 547                 print()
 548                 print("       "+green("--nodeps")+" ("+green("-O")+" short option)")
 549                 print("              Merge specified packages, but don't merge any dependencies.")
 550                 print("              Note that the build may fail if deps aren't satisfied.")
 551                 print()
 552                 print("       "+green("--noreplace")+" ("+green("-n")+" short option)")
 553                 print("              Skip the packages specified on the command-line that have")
 554                 print("              already been installed.  Without this option, any packages,")
 555                 print("              ebuilds, or deps you specify on the command-line *will* cause")
 556                 print("              Portage to remerge the package, even if it is already installed.")
 557                 print("              Note that Portage won't remerge dependencies by default.")
 558                 desc = "Also note that this option takes " + \
 559                         "precedence over options such as --newuse, preventing a package " + \
 560                         "from being reinstalled even though the corresponding USE flag settings " + \
 561                         "may have changed."
 562                 for line in wrap(desc, desc_width):
 563                         print(desc_indent + line)
 564                 print()
 565                 print("       "+green("--nospinner"))
 566                 print("              Disables the spinner regardless of terminal type.")
 567                 print()
 568                 print("       " + green("--usepkg-exclude") + " " + turquoise("ATOMS"))
 569                 desc = "A space separated list of package names or slot atoms." + \
 570                         " Emerge will ignore matching binary packages."
 571                 for line in wrap(desc, desc_width):
 572                         print(desc_indent + line)
 573                 print()
 574                 print("       " + green("--rebuild-exclude") + " " + turquoise("ATOMS"))
 575                 desc = "A space separated list of package names or slot atoms." + \
 576                         " Emerge will not rebuild matching packages due to --rebuild."
 577                 for line in wrap(desc, desc_width):
 578                         print(desc_indent + line)
 579                 print()
 580                 print("       " + green("--rebuild-ignore") + " " + turquoise("ATOMS"))
 581                 desc = "A space separated list of package names or slot atoms." + \
 582                         " Emerge will not rebuild packages that depend on matching " + \
 583                         " packages due to --rebuild."
 584                 for line in wrap(desc, desc_width):
 585                         print(desc_indent + line)
 586                 print()
 587                 print("       "+green("--oneshot")+" ("+green("-1")+" short option)")
 588                 print("              Emerge as normal, but don't add packages to the world profile.")
 589                 print("              This package will only be updated if it is depended upon by")
 590                 print("              another package.")
 591                 print()
 592                 print("       "+green("--onlydeps")+" ("+green("-o")+" short option)")
 593                 print("              Only merge (or pretend to merge) the dependencies of the")
 594                 print("              specified packages, not the packages themselves.")
 595                 print()
 596                 print("       " + green("--package-moves") + " [ %s | %s ]" % \
 597                         (turquoise("y"), turquoise("n")))
 598                 desc = "Perform package moves when necessary. This option " + \
 599                         "is enabled by default. WARNING: This option " + \
 600                         "should remain enabled under normal circumstances. " + \
 601                         "Do not disable it unless you know what you are " + \
 602                         "doing."
 603                 for line in wrap(desc, desc_width):
 604                         print(desc_indent + line)
 605                 print()
 606                 print("       "+green("--pretend")+" ("+green("-p")+" short option)")
 607                 print("              Instead of actually performing the merge, simply display what")
 608                 print("              ebuilds and tbz2s *would* have been installed if --pretend")
 609                 print("              weren't used.  Using --pretend is strongly recommended before")
 610                 print("              installing an unfamiliar package.  In the printout, N = new,")
 611                 print("              U = updating, R = replacing, F = fetch  restricted, B = blocked")
 612                 print("              by an already installed package, D = possible downgrading,")
 613                 print("              S = slotted install. --verbose causes affecting use flags to be")
 614                 print("              printed out accompanied by a '+' for enabled and a '-' for")
 615                 print("              disabled USE flags.")
 616                 print()
 617                 print("       " + green("--quiet") + \
 618                         " [ %s | %s ] (%s short option)" % \
 619                         (turquoise("y"), turquoise("n"), green("-q")))
 620                 print("              Effects vary, but the general outcome is a reduced or condensed")
 621                 print("              output from portage's displays.")
 622                 print()
 623                 print("       " + green("--quiet-build") + \
 624                         " [ %s | %s ]" % (turquoise("y"), turquoise("n")))
 625                 desc = "Redirect all build output to logs alone, and do not " + \
 626                         "display it on stdout."
 627                 for line in wrap(desc, desc_width):
 628                         print(desc_indent + line)
 629                 print()
 630                 print("       "+green("--quiet-unmerge-warn"))
 631                 desc = "Disable the warning message that's shown prior to " + \
 632                         "--unmerge actions. This option is intended " + \
 633                         "to be set in the make.conf(5) " + \
 634                         "EMERGE_DEFAULT_OPTS variable."
 635                 for line in wrap(desc, desc_width):
 636                         print(desc_indent + line)
 637                 print()
 638                 print("       " + green("--rebuild-if-new-rev") + " [ %s | %s ]" % \
 639                         (turquoise("y"), turquoise("n")))
 640                 desc = "Rebuild packages when dependencies that are " + \
 641                         "used at both build-time and run-time are built, " + \
 642                         "if the dependency is not already installed with the " + \
 643                         "same version and revision."
 644                 for line in wrap(desc, desc_width):
 645                         print(desc_indent + line)
 646                 print()
 647                 print("       " + green("--rebuild-if-new-ver") + " [ %s | %s ]" % \
 648                         (turquoise("y"), turquoise("n")))
 649                 desc = "Rebuild packages when dependencies that are " + \
 650                         "used at both build-time and run-time are built, " + \
 651                         "if the dependency is not already installed with the " + \
 652                         "same version. Revision numbers are ignored."
 653                 for line in wrap(desc, desc_width):
 654                         print(desc_indent + line)
 655                 print()
 656                 print("       " + green("--rebuild-if-unbuilt") + " [ %s | %s ]" % \
 657                         (turquoise("y"), turquoise("n")))
 658                 desc = "Rebuild packages when dependencies that are " + \
 659                         "used at both build-time and run-time are built."
 660                 for line in wrap(desc, desc_width):
 661                         print(desc_indent + line)
 662                 print()
 663                 print("       " + green("--rebuilt-binaries") + " [ %s | %s ]" % \
 664                         (turquoise("y"), turquoise("n")))
 665                 desc = "Replace installed packages with binary packages that have " + \
 666                         "been rebuilt. Rebuilds are detected by comparison of " + \
 667                         "BUILD_TIME package metadata. This option is enabled " + \
 668                         "automatically when using binary packages " + \
 669                         "(--usepkgonly or --getbinpkgonly) together with " + \
 670                         "--update and --deep."
 671                 for line in wrap(desc, desc_width):
 672                         print(desc_indent + line)
 673                 print()
 674                 print("       "+green("--rebuilt-binaries-timestamp") + "=%s" % turquoise("TIMESTAMP"))
 675                 desc = "This option modifies emerge's behaviour only if " + \
 676                         "--rebuilt-binaries is given. Only binaries that " + \
 677                         "have a BUILD_TIME that is larger than the given TIMESTAMP " + \
 678                         "and that is larger than that of the installed package will " + \
 679                         "be considered by the rebuilt-binaries logic."
 680                 for line in wrap(desc, desc_width):
 681                         print(desc_indent + line)
 682                 print()
 683                 print("       "+green("--reinstall ") + turquoise("changed-use"))
 684                 print("              Tells emerge to include installed packages where USE flags have")
 685                 print("              changed since installation.  Unlike --newuse, this option does")
 686                 print("              not trigger reinstallation when flags that the user has not")
 687                 print("              enabled are added or removed.")
 688                 print()
 689                 print("       " + green("--reinstall-atoms") + " " + turquoise("ATOMS"))
 690                 desc = "A space separated list of package names or slot atoms. " + \
 691                         "Emerge will treat matching packages as if they are not " + \
 692                         "installed, and reinstall them if necessary."
 693                 for line in wrap(desc, desc_width):
 694                         print(desc_indent + line)
 695                 print()
 696                 print("       "+green("--root=DIR"))
 697                 desc = "Set the ROOT environment variable " + \
 698                         "which is documented in the emerge(1) man page."
 699                 for line in wrap(desc, desc_width):
 700                         print(desc_indent + line)
 701                 print()
 702                 print("       "+green("--root-deps[=rdeps]"))
 703                 desc = "If no argument is given then build-time dependencies of packages for " + \
 704                         "ROOT are installed to " + \
 705                         "ROOT instead of /. If the rdeps argument is given then discard " + \
 706                         "all build-time dependencies of packages for ROOT. This option is " + \
 707                         "only meaningful when used together with ROOT and it should not " + \
 708                         "be enabled under normal circumstances. For currently supported " + \
 709                         "EAPI values, the build-time dependencies are specified in the " + \
 710                         "DEPEND variable. However, behavior may change for new " + \
 711                         "EAPIs when related extensions are added in the future."
 712                 for line in wrap(desc, desc_width):
 713                         print(desc_indent + line)
 714                 print()
 715                 print("       " + green("--select") + " [ %s | %s ]" % \
 716                         (turquoise("y"), turquoise("n")))
 717                 desc = "Add specified packages to the world set (inverse of " + \
 718                         "--oneshot). This is useful if you want to " + \
 719                         "use EMERGE_DEFAULT_OPTS to make " + \
 720                         "--oneshot behavior default."
 721                 for line in wrap(desc, desc_width):
 722                         print(desc_indent + line)
 723                 print()
 724                 print("       " + green("--selective") + " [ %s | %s ]" % \
 725                         (turquoise("y"), turquoise("n")))
 726                 desc = "This is similar to the --noreplace option, except that it " + \
 727                         "does not take precedence over options such as --newuse. " + \
 728                         "Some options, such as --update, imply --selective. " + \
 729                         "Use --selective=n if you want to forcefully disable " + \
 730                         "--selective, regardless of options like --update."
 731                 for line in wrap(desc, desc_width):
 732                         print(desc_indent + line)
 733                 print()
 734                 print("       "+green("--skipfirst"))
 735                 desc = "This option is only valid when " + \
 736                         "used with --resume.  It removes the " + \
 737                         "first package in the resume list. " + \
 738                         "Dependencies are recalculated for " + \
 739                         "remaining packages and any that " + \
 740                         "have unsatisfied dependencies or are " + \
 741                         "masked will be automatically dropped. " + \
 742                         "Also see the related " + \
 743                         "--keep-going option."
 744                 for line in wrap(desc, desc_width):
 745                         print(desc_indent + line)
 746                 print()
 747                 print("       "+green("--tree")+" ("+green("-t")+" short option)")
 748                 print("              Shows the dependency tree using indentation for dependencies.")
 749                 print("              The packages are also listed in reverse merge order so that")
 750                 print("              a package's dependencies follow the package. Only really useful")
 751                 print("              in combination with --emptytree, --update or --deep.")
 752                 print()
 753                 print("       " + green("--unordered-display"))
 754                 desc = "By default the displayed merge list is sorted using the " + \
 755                         "order in which the packages will be merged. When " + \
 756                         "--tree is used together with this option, this " + \
 757                         "constraint is removed, hopefully leading to a more " + \
 758                         "readable dependency tree."
 759                 for line in wrap(desc, desc_width):
 760                         print(desc_indent + line)
 761                 print()
 762                 print("       "+green("--update")+" ("+green("-u")+" short option)")
 763                 desc = "Updates packages to the best version available, which may " + \
 764                         "not always be the  highest version number due to masking " + \
 765                         "for testing and development. Package atoms specified on " + \
 766                         "the command line are greedy, meaning that unspecific " + \
 767                         "atoms may match multiple versions of slotted packages."
 768                 for line in wrap(desc, desc_width):
 769                         print(desc_indent + line)
 770                 print()
 771                 print("       " + green("--use-ebuild-visibility") + " [ %s | %s ]" % \
 772                         (turquoise("y"), turquoise("n")))
 773                 desc = "Use unbuilt ebuild metadata for visibility " + \
 774                         "checks on built packages."
 775                 for line in wrap(desc, desc_width):
 776                         print(desc_indent + line)
 777                 print()
 778                 print("       " + green("--useoldpkg-atoms") + " " + turquoise("ATOMS"))
 779                 desc = "A space separated list of package names or slot atoms." + \
 780                         " Emerge will prefer matching binary packages over newer" + \
 781                         " unbuilt packages."
 782                 for line in wrap(desc, desc_width):
 783                         print(desc_indent + line)
 784                 print()
 785                 print("       " + green("--usepkg") + \
 786                         " [ %s | %s ] (%s short option)" % \
 787                         (turquoise("y"), turquoise("n"), green("-k")))
 788                 print("              Tell emerge to use binary packages (from $PKGDIR) if they are")
 789                 print("              available, thus possibly avoiding some time-consuming compiles.")
 790                 print("              This option is useful for CD installs; you can export")
 791                 print("              PKGDIR=/mnt/cdrom/packages and then use this option to have")
 792                 print("              emerge \"pull\" binary packages from the CD in order to satisfy")
 793                 print("              dependencies.")
 794                 print()
 795                 print("       " + green("--usepkgonly") + \
 796                         " [ %s | %s ] (%s short option)" % \
 797                         (turquoise("y"), turquoise("n"), green("-K")))
 798                 print("              Like --usepkg above, except this only allows the use of binary")
 799                 print("              packages, and it will abort the emerge if the package is not")
 800                 print("              available at the time of dependency calculation.")
 801                 print()
 802                 print("       "+green("--verbose")+" ("+green("-v")+" short option)")
 803                 print("              Effects vary, but the general outcome is an increased or expanded")
 804                 print("              display of content in portage's displays.")
 805                 print()
 806                 print("       "+green("--with-bdeps")+" < " + turquoise("y") + " | "+ turquoise("n")+" >")
 807                 print("              In dependency calculations, pull in build time dependencies that")
 808                 print("              are not strictly required. This defaults to 'n' for installation")
 809                 print("              actions and 'y' for the --depclean action. This setting can be")
 810                 print("              added to EMERGE_DEFAULT_OPTS (see make.conf(5)) and later")
 811                 print("              overridden via the command line.")
 812                 print()