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* nix-env -e: support uninstalling by path, so that one can say

Browse source 
$ nix-env -e $(which firefox)

  or

    $ nix-env -e /nix/store/nywzlygrkfcgz7dfmhm5xixlx1l0m60v-pan-0.132

* nix-env -i: if an argument contains a slash anywhere, treat it as a
  path and follow it through symlinks into the Nix store.  This allows
  things like

    $ nix-build -A firefox
    $ nix-env -i ./result

* nix-env -q/-i/-e: don't complain when the `*' selector doesn't match
  anything.  In particular, `nix-env -q \*' doesn't fail anymore on an
  empty profile.
This commit is contained in:
Eelco Dolstra 2007-11-29 16:18:24 +00:00
parent 12d0a1eb75
commit 633518628f
7 changed files with 81 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/libstore/gc.cc
View file

@ -26,7 +26,7 @@ static string gcLockName = "gc.lock";
static string tempRootsDir = "temproots";
static string gcRootsDir = "gcroots";
const unsigned int defaultGcLevel = 1000;
static const int defaultGcLevel = 1000;
/* Acquire the global GC lock. This is used to prevent new Nix
@ -447,7 +447,7 @@ void LocalStore::collectGarbage(GCAction action, const PathSet & pathsToDelete,
queryBoolSetting("gc-keep-outputs", false);
bool gcKeepDerivations =
queryBoolSetting("gc-keep-derivations", true);
unsigned int gcKeepOutputsThreshold =
int gcKeepOutputsThreshold =
queryIntSetting ("gc-keep-outputs-threshold", defaultGcLevel);
/* Acquire the global GC root. This prevents
@ -503,13 +503,12 @@ void LocalStore::collectGarbage(GCAction action, const PathSet & pathsToDelete,
string gcLevelStr = drv.env["__gcLevel"];
int gcLevel;
if (!string2Int(gcLevelStr,gcLevel)) {
if (!string2Int(gcLevelStr, gcLevel))
gcLevel = defaultGcLevel;
}
if (gcLevel >= gcKeepOutputsThreshold)
for (DerivationOutputs::iterator j = drv.outputs.begin();
j != drv.outputs.end(); ++j)
j != drv.outputs.end(); ++j)
if (store->isValidPath(j->second.path))
computeFSClosure(j->second.path, livePaths);
}