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* Package conflict resolution through priority levels. If there is a

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user environment collission between two packages due to overlapping
  file names, then a package with a higher priority will overwrite the
  symlinks of a package with a lower priority.  E.g.,

    $ nix-env --set-flag priority 5 gcc
    $ nix-env --set-flag priority 10 binutils

  gives gcc a higher priority than binutils (higher number = lower
  priority).
This commit is contained in:
Eelco Dolstra 2007-04-27 23:28:44 +00:00
parent 3d05166086
commit a46db5d013
3 changed files with 49 additions and 21 deletions
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4
corepkgs/buildenv/default.nix
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@ -4,9 +4,11 @@ derivation {
name = "user-environment";
system = system;
builder = ./builder.pl;
derivations = derivations;
manifest = manifest;
# !!! grmbl, need structured data for passing this in a clean way.
paths = derivations;
active = map (x: if x ? meta && x.meta ? active then x.meta.active else "true") derivations;
priority = map (x: if x ? meta && x.meta ? priority then x.meta.priority else "5") derivations;
}