public
/
nixpkgs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add lowPrioSet and hiPrioSet functions to enable changing of priorities of attrsets with packages such as kde.

This commit is contained in:
Evgeny Egorochkin 2013-12-26 04:22:29 +02:00
parent 7a988c62af
commit bdfcda81e7
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
lib/meta.nix
View File

@ -1,6 +1,9 @@
/* Some functions for manipulating meta attributes, as well as the /* Some functions for manipulating meta attributes, as well as the
name attribute. */ name attribute. */
let lib = import ./default.nix;
in
rec { rec {
@ -35,14 +38,30 @@ rec {
appendToName = suffix: updateName (name: "${name}-${suffix}"); appendToName = suffix: updateName (name: "${name}-${suffix}");
/* Apply a function to each derivation and only to derivations in an attrset
*/
mapDerivationAttrset = f: set: lib.mapAttrs (name: pkg: if lib.isDerivation pkg then (f pkg) else pkg) set;
/* Decrease the nix-env priority of the package, i.e., other /* Decrease the nix-env priority of the package, i.e., other
versions/variants of the package will be preferred. versions/variants of the package will be preferred.
*/ */
lowPrio = drv: addMetaAttrs { priority = "10"; } drv; lowPrio = drv: addMetaAttrs { priority = "10"; } drv;
/* Apply lowPrio to an attrset with derivations
*/
lowPrioSet = set: mapDerivationAttrset lowPrio set;
/* Increase the nix-env priority of the package, i.e., this /* Increase the nix-env priority of the package, i.e., this
version/variant of the package will be preferred. version/variant of the package will be preferred.
*/ */
hiPrio = drv: addMetaAttrs { priority = "-10"; } drv; hiPrio = drv: addMetaAttrs { priority = "-10"; } drv;
/* Apply hiPrio to an attrset with derivations
*/
hiPrioSet = set: mapDerivationAttrset hiPrio set;
} }