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nix-gh/corepkgs/buildenv/default.nix

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* nix-env: a tool to manage user environments. * Replace all directory reading code by a generic readDirectory() function.
2003-11-19 18:27:16 +01:00
{system, derivations, manifest}:
derivation {
name = "user-environment";
system = system;
builder = ./builder.pl;
* Package conflict resolution through priority levels. If there is a 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).
2007-04-28 01:28:44 +02:00
* nix-env: a tool to manage user environments. * Replace all directory reading code by a generic readDirectory() function.
2003-11-19 18:27:16 +01:00
manifest = manifest;
* Allow conflicting packages to be kept in a user environment, and allow switching between them (NIX-80). Example: two versions of Pan: $ nix-env -q pan pan-0.128 pan-0.14.2.91 $ readlink $(which pan) /nix/store/l38jrbilw269drpjkx7kinhrxj6fjh59-pan-0.14.2.91/bin/pan At most one of them can be active any given time. Assuming than 0.14.2.91 is active, you can active 0.128 as follows: $ nix-env --set-flag active false pan-0.14.2.91 $ nix-env --set-flag active true pan-0.128 $ readlink $(which pan) /nix/store/nziqwnlzy7xl385kglxhg75pfl5i936n-pan-0.128/bin/pan More flags to follow.
2007-04-28 00:40:59 +02:00
# !!! grmbl, need structured data for passing this in a clean way.
* Package conflict resolution through priority levels. If there is a 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).
2007-04-28 01:28:44 +02:00
paths = derivations;
* Allow conflicting packages to be kept in a user environment, and allow switching between them (NIX-80). Example: two versions of Pan: $ nix-env -q pan pan-0.128 pan-0.14.2.91 $ readlink $(which pan) /nix/store/l38jrbilw269drpjkx7kinhrxj6fjh59-pan-0.14.2.91/bin/pan At most one of them can be active any given time. Assuming than 0.14.2.91 is active, you can active 0.128 as follows: $ nix-env --set-flag active false pan-0.14.2.91 $ nix-env --set-flag active true pan-0.128 $ readlink $(which pan) /nix/store/nziqwnlzy7xl385kglxhg75pfl5i936n-pan-0.128/bin/pan More flags to follow.
2007-04-28 00:40:59 +02:00
active = map (x: if x ? meta && x.meta ? active then x.meta.active else "true") derivations;
* Package conflict resolution through priority levels. If there is a 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).
2007-04-28 01:28:44 +02:00
priority = map (x: if x ? meta && x.meta ? priority then x.meta.priority else "5") derivations;
* nix-env: a tool to manage user environments. * Replace all directory reading code by a generic readDirectory() function.
2003-11-19 18:27:16 +01:00
}