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authorZac Medico <zmedico@gentoo.org>2007-07-22 06:33:51 +0000
committerZac Medico <zmedico@gentoo.org>2007-07-22 06:33:51 +0000
commit7f666283b970518d97cf3a657b4150392c54cecc (patch)
treede85dfc6cf5e23bde7033fb70a8664307a6dca21
parent694e024afdcae81ff2bb7c33b5f6aa4c48289082 (diff)
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Document --depclean and --prune enhancements.
svn path=/main/trunk/; revision=7345
-rw-r--r--man/emerge.134
-rw-r--r--pym/emerge/help.py28
2 files changed, 40 insertions, 22 deletions
diff --git a/man/emerge.1 b/man/emerge.1
index db51d3318..3987f4e0c 100644
--- a/man/emerge.1
+++ b/man/emerge.1
@@ -90,18 +90,23 @@ has completed. This usually entails configuration file setup or other similar
setups that the user may wish to run.
.TP
.BR \-\-depclean
-Determines all packages installed on the system that have no
-explicit reason for being there. \fBemerge\fR generates a list
-of packages which it expects to be installed by checking the
-\fBsystem\fR package list and the \fBworld\fR file. It then
-compares that list to the list of packages which are actually
-installed; the differences are listed as unnecessary packages
-and then unmerged after a short timeout. \fBWARNING: Removing some
+Cleans the system by removing packages that are not associated
+with explicitly merged packages. Depclean works by creating the
+full dependency tree from the system list and the world file,
+then comparing it to installed packages. Packages installed, but
+not associated with an explicit merge are listed as candidates
+for unmerging. Inexperienced users are advised to use \fB\-\-pretend\fR
+with this option in order to see a preview of which packages
+will be uninstalled. \fBWARNING: Removing some
packages may cause packages which link to the removed package
-to stop working and complain about missing libraries.\fR
-Re\-emerge the complaining package to fix this issue. Also see
+to stop working and complain about missing libraries.\fR
+Rebuild the complaining package to fix this issue. Also see
\fB\-\-with\-bdeps\fR for behavior with respect to build time dependencies that
-are not strictly required.
+are not strictly required. Depclean serves as a dependency aware
+version of \fB\-\-unmerge\fR. When given one or more atoms, it will
+unmerge matched packages that have no reverse dependencies. Use
+\fB\-\-depclean\fR together with \fB\-\-verbose\fR to show reverse
+dependencies.
.TP
.BR "\-\-help " (\fB\-h\fR)
Displays help information for emerge. Adding one of the additional
@@ -128,7 +133,9 @@ PORTDIR_OVERLAY. In order to generate cache for overlays, use \fB\-\-regen\fR.
\fBWARNING: This action can remove important packages!\fR Removes all but the
highest installed version of a package from your system. This action doesn't
verify the possible binary compatibility between versions and can thus remove
-essential dependencies from your system.
+essential dependencies from your system. Use \fB\-\-prune\fR together with
+\fB\-\-verbose\fR to show reverse dependencies or with \fB\-\-nodeps\fR to
+ignore all dependencies.
.TP
.BR \-\-regen
Causes portage to check and update the dependency cache of all ebuilds in the
@@ -178,8 +185,9 @@ description of PORTDIR_OVERLAY for a method to avoid deletions.
\fBWARNING: This action can remove important packages!\fR Removes
all matching packages. This does no checking of dependencies, so
it may remove packages necessary for the proper operation of your
-system. Its arguments can be \fIebuilds\fR, \fIsets\fR, or
-\fIatoms\fR.
+system. Its arguments can be \fIatoms\fR or
+\fIebuilds\fR. For a dependency aware version of \fB\-\-unmerge\fR,
+use \fB\-\-depclean\fR or \fB\-\-prune\fR.
.TP
.BR "\-\-update " (\fB\-u\fR)
Updates packages to the best version available, which may not always be the
diff --git a/pym/emerge/help.py b/pym/emerge/help.py
index def367fd5..d7000aa15 100644
--- a/pym/emerge/help.py
+++ b/pym/emerge/help.py
@@ -64,10 +64,17 @@ def help(myaction,myopts,havecolor=1):
print " full dependency tree from the system list and the world file,"
print " then comparing it to installed packages. Packages installed, but"
print " not associated with an explicit merge are listed as candidates"
- print " for unmerging."+turquoise(" WARNING: This can seriously affect your system by")
- print " "+turquoise("removing packages that may have been linked against, but due to")
- print " "+turquoise("changes in USE flags may no longer be part of the dep tree. Use")
- print " "+turquoise("caution when employing this feature.")
+ print " for unmerging. Inexperienced users are advised to use --pretend"
+ print " with this option in order to see a preview of which packages will"
+ print " be uninstalled. "+turquoise(" WARNING: Removing some packages may cause")
+ print " "+turquoise("packages which link to the removed package to stop working and")
+ print " "+turquoise("complain about missing libraries. Rebuild the complaining package")
+ print " "+turquoise("to fix this issue.")+" Also see --with-bdeps for behavior with"
+ print " respect to build time dependencies that are not strictly"
+ print " required. Depclean serves as a dependency aware version of"
+ print " --unmerge. When given one or more atoms, it will unmerge matched"
+ print " packages that have no reverse dependencies. Use --depclean"
+ print " together with --verbose to show reverse dependencies."
print
print " "+green("--info")
print " Displays important portage variables that will be exported to"
@@ -90,8 +97,9 @@ def help(myaction,myopts,havecolor=1):
print " Removes all but the highest installed version of a package"
print " from your system. This action doesn't verify the possible binary"
print " compatibility between versions and can thus remove essential"
- print " dependencies from your system."
- print " The argument format is the same as for the "+bold("--clean")+" action."
+ print " dependencies from your system. Use --prune together with"
+ print " --verbose to show reverse dependencies or with --nodeps to"
+ print " ignore all dependencies."
print
print " "+green("--regen")
print " Causes portage to check and update the dependency cache of all"
@@ -137,9 +145,11 @@ def help(myaction,myopts,havecolor=1):
print
print " "+green("--unmerge")+" ("+green("-C")+" short option)"
print " "+turquoise("WARNING: This action can remove important packages!")
- print " Removes all matching packages "+bold("completely")+" from"
- print " your system. Specify arguments using the dependency specification"
- print " format described in the "+bold("--clean")+" action above."
+ print " Removes all matching packages. This does no checking of"
+ print " dependencies, so it may remove packages necessary for the proper"
+ print " operation of your system. Its arguments can be atoms or"
+ print " ebuilds. For a dependency aware version of --unmerge, use"
+ print " --depclean or --prune."
print
print " "+green("--update")+" ("+green("-u")+" short option)"
print " Updates packages to the best version available, which may not"