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| author | Ludovic Courtès <ludo@gnu.org> | 2014-02-06 21:49:47 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2014-02-06 21:49:47 +0100 |
| commit | 6e37066e76ce4ffaf8328242d941ca2e0af2965a (patch) | |
| tree | 9d7337bc9b5ccc940e2df491582c036f85e08e74 /doc | |
| parent | c37b2b2aa5326feeeb4fa8edff988adf6fb96f15 (diff) | |
| download | gnu-guix-6e37066e76ce4ffaf8328242d941ca2e0af2965a.tar gnu-guix-6e37066e76ce4ffaf8328242d941ca2e0af2965a.tar.gz | |
daemon: Add '--gc-keep-outputs' and '--gc-keep-derivations'.
* nix/nix-daemon/guix-daemon.cc (GUIX_OPT_GC_KEEP_OUTPUTS,
GUIX_OPT_GC_KEEP_DERIVATIONS): New macros.
(options): Add 'gc-keep-outputs' and 'gc-keep-derivations'.
(string_to_bool): New function.
(parse_opt): Honor GUIX_OPT_GC_KEEP_DERIVATIONS and
GUIX_OPT_GC_KEEP_OUTPUTS.
* doc/guix.texi (Invoking guix-daemon): Document --gc-keep-outputs and
--gc-keep-derivations.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix.texi | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 28b1cb8bd7..af84b75108 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -502,6 +502,30 @@ the daemon makes the new file a hard link to the other file. This slightly increases the input/output load at the end of a build process. This option disables this. +@item --gc-keep-outputs[=yes|no] +Tell whether the garbage collector (GC) must keep outputs of live +derivations. + +When set to ``yes'', the GC will keep the outputs of any live derivation +available in the store---the @code{.drv} files. The default is ``no'', +meaning that derivation outputs are kept only if they are GC roots. + +@item --gc-keep-derivations[=yes|no] +Tell whether the garbage collector (GC) must keep derivations +corresponding to live outputs. + +When set to ``yes'', as is the case by default, the GC keeps +derivations---i.e., @code{.drv} files---as long as at least one of their +outputs is live. This allows users to keep track of the origins of +items in their store. Setting it to ``no'' saves a bit of disk space. + +Note that when both @code{--gc-keep-derivations} and +@code{--gc-keep-outputs} are used, the effect is to keep all the build +prerequisites (the sources, compiler, libraries, and other build-time +tools) of live objects in the store, regardless of whether these +prerequisites are live. This is convenient for developers since it +saves rebuilds or downloads. + @item --impersonate-linux-2.6 On Linux-based systems, impersonate Linux 2.6. This means that the kernel's @code{uname} system call will report 2.6 as the release number. |