mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-22 21:53:32 +00:00
91 lines
2.4 KiB
Nix
91 lines
2.4 KiB
Nix
/* Some functions for manipulating meta attributes, as well as the
|
|
name attribute. */
|
|
|
|
{ lib }:
|
|
|
|
rec {
|
|
|
|
|
|
/* Add to or override the meta attributes of the given
|
|
derivation.
|
|
|
|
Example:
|
|
addMetaAttrs {description = "Bla blah";} somePkg
|
|
*/
|
|
addMetaAttrs = newAttrs: drv:
|
|
drv // { meta = (drv.meta or {}) // newAttrs; };
|
|
|
|
|
|
/* Disable Hydra builds of given derivation.
|
|
*/
|
|
dontDistribute = drv: addMetaAttrs { hydraPlatforms = []; } drv;
|
|
|
|
|
|
/* Change the symbolic name of a package for presentation purposes
|
|
(i.e., so that nix-env users can tell them apart).
|
|
*/
|
|
setName = name: drv: drv // {inherit name;};
|
|
|
|
|
|
/* Like `setName', but takes the previous name as an argument.
|
|
|
|
Example:
|
|
updateName (oldName: oldName + "-experimental") somePkg
|
|
*/
|
|
updateName = updater: drv: drv // {name = updater (drv.name);};
|
|
|
|
|
|
/* Append a suffix to the name of a package (before the version
|
|
part). */
|
|
appendToName = suffix: updateName (name:
|
|
let x = builtins.parseDrvName name; in "${x.name}-${suffix}-${x.version}");
|
|
|
|
|
|
/* 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;
|
|
|
|
/* Set the nix-env priority of the package.
|
|
*/
|
|
setPrio = priority: addMetaAttrs { inherit priority; };
|
|
|
|
/* Decrease the nix-env priority of the package, i.e., other
|
|
versions/variants of the package will be preferred.
|
|
*/
|
|
lowPrio = setPrio 10;
|
|
|
|
/* Apply lowPrio to an attrset with derivations
|
|
*/
|
|
lowPrioSet = set: mapDerivationAttrset lowPrio set;
|
|
|
|
|
|
/* Increase the nix-env priority of the package, i.e., this
|
|
version/variant of the package will be preferred.
|
|
*/
|
|
hiPrio = setPrio (-10);
|
|
|
|
/* Apply hiPrio to an attrset with derivations
|
|
*/
|
|
hiPrioSet = set: mapDerivationAttrset hiPrio set;
|
|
|
|
|
|
/* Check to see if a platform is matched by the given `meta.platforms`
|
|
element.
|
|
|
|
A `meta.platform` pattern is either
|
|
|
|
1. (legacy) a system string.
|
|
|
|
2. (modern) a pattern for the platform `parsed` field.
|
|
|
|
We can inject these into a patten for the whole of a structured platform,
|
|
and then match that.
|
|
*/
|
|
platformMatch = platform: elem: let
|
|
pattern =
|
|
if builtins.isString elem
|
|
then { system = elem; }
|
|
else { parsed = elem; };
|
|
in lib.matchAttrs pattern platform;
|
|
}
|