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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
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20
src/libstore/store-api.cc
View file

@ -48,6 +48,26 @@ Path toStorePath(const Path & path)
}
Path followLinksToStore(const Path & _path)
{
Path path = absPath(_path);
while (!isInStore(path)) {
if (!isLink(path)) break;
string target = readLink(path);
path = absPath(target, dirOf(path));
}
if (!isInStore(path))
throw Error(format("path `%1%' is not in the Nix store") % path);
return path;
}
Path followLinksToStorePath(const Path & path)
{
return toStorePath(followLinksToStore(path));
}
void checkStoreName(const string & name)
{
string validChars = "+-._?=";