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* `nix-env -u' now allows a specific version to be specified when

Browse source 
upgrading.

  This fixes a bug reported by Martin:

    $ nix-env -i foo-1.0
    $ nix-env -u foo-1.0
    upgrading foo-1.0 to foo-1.1
This commit is contained in:
Eelco Dolstra 2004-06-28 13:37:05 +00:00
parent 2746a879e2
commit 24286e15c9
2 changed files with 10 additions and 4 deletions
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3
doc/manual/nix-env.xml
View file

@ -312,6 +312,9 @@ $ nix-env -f ~/foo.nix -i '*' <lineannotation>(install everything in <filename>f
$ nix-env --upgrade gcc
upgrading `gcc-3.3.1' to `gcc-3.4'
$ nix-env -u gcc-3.3.2 --always <lineannotation>(switch to a specific version)</lineannotation>
upgrading `gcc-3.4' to `gcc-3.3.2'
$ nix-env --upgrade pan
<lineannotation>(no upgrades available, so nothing happens)</lineannotation>

11
src/nix-env/main.cc
View file

@ -310,14 +310,16 @@ static void upgradeDerivations(EvalState & state,
i != installedDrvs.end(); ++i)
{
DrvName drvName(i->second.name);
DrvName selector;
/* Do we want to upgrade this derivation? */
bool upgrade = false;
for (DrvNames::iterator j = selectors.begin();
j != selectors.end(); ++j)
{
if (j->matches(drvName)) {
if (j->name == "*" || j->name == drvName.name) {
j->hits++;
selector = *j;
upgrade = true;
break;
}
@ -344,9 +346,10 @@ static void upgradeDerivations(EvalState & state,
upgradeType == utLeq && d <= 0 ||
upgradeType == utAlways)
{
if (bestDrv == availDrvs.end() ||
compareVersions(
bestName.version, newName.version) < 0)
if (selector.matches(newName) &&
(bestDrv == availDrvs.end() ||
compareVersions(
bestName.version, newName.version) < 0))
{
bestDrv = j;
bestName = newName;