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author | John Ericson <John.Ericson@Obsidian.Systems> | 2018-07-05 20:19:07 -0400 |
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committer | John Ericson <John.Ericson@Obsidian.Systems> | 2018-07-09 12:33:43 -0400 |
commit | 0eb142cd46e8a46eb61fe41e1b916ffe0ec3e0ba (patch) | |
tree | cb6cce646a8fc89c49e13048ca2c03b6c7ef4fca /pkgs/top-level | |
parent | 48ccdf322d9e7a68d0caf5833511ee3e53ec7d3a (diff) | |
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top-level: Expose `splicePackages` for `newScope` users
Otherwise extra packages in scope can't be made to work for cross. As much as I think splicing is an evil trick, I think it's best to do this and at least have it work consistently for now. It would seems simpler to expose a `newScopeWithSplicing`, but there's a few attrs (like `buildPackages` or `buildHaskellPackages`) that shouldn't be spliced. Users should instead splice, override the splicing on those packages, and apply `newScope` to that.
Diffstat (limited to 'pkgs/top-level')
-rw-r--r-- | pkgs/top-level/splice.nix | 66 |
1 files changed, 40 insertions, 26 deletions
diff --git a/pkgs/top-level/splice.nix b/pkgs/top-level/splice.nix index 078075323dd0..9f5acd0a7de7 100644 --- a/pkgs/top-level/splice.nix +++ b/pkgs/top-level/splice.nix @@ -34,9 +34,10 @@ let defaultHostTargetScope = pkgs // pkgs.xorg; defaultTargetTargetScope = pkgs.targetPackages // pkgs.targetPackages.xorg or {}; - splicer = pkgsBuildBuild: pkgsBuildHost: pkgsBuildTarget: - pkgsHostHost: pkgsHostTarget: - pkgsTargetTarget: let + spliceReal = { pkgsBuildBuild, pkgsBuildHost, pkgsBuildTarget + , pkgsHostHost, pkgsHostTarget + , pkgsTargetTarget + }: let mash = # Other pkgs sets pkgsBuildBuild // pkgsBuildTarget // pkgsHostHost // pkgsTargetTarget @@ -50,7 +51,7 @@ let valueBuildBuild = pkgsBuildBuild.${name} or {}; valueBuildHost = pkgsBuildHost.${name} or {}; valueBuildTarget = pkgsBuildTarget.${name} or {}; - valueHostHost = throw "`valueHostHost` unimplemented: pass manually rather than relying on splicer."; + valueHostHost = throw "`valueHostHost` unimplemented: pass manually rather than relying on splice."; valueHostTarget = pkgsHostTarget.${name} or {}; valueTargetTarget = pkgsTargetTarget.${name} or {}; augmentedValue = defaultValue @@ -77,38 +78,51 @@ let in # The derivation along with its outputs, which we recur # on to splice them together. - if lib.isDerivation defaultValue then augmentedValue // splicer - (tryGetOutputs valueBuildBuild) (tryGetOutputs valueBuildHost) (tryGetOutputs valueBuildTarget) - (tryGetOutputs valueHostHost) (getOutputs valueHostTarget) - (tryGetOutputs valueTargetTarget) + if lib.isDerivation defaultValue then augmentedValue // spliceReal { + pkgsBuildBuild = tryGetOutputs valueBuildBuild; + pkgsBuildHost = tryGetOutputs valueBuildHost; + pkgsBuildTarget = tryGetOutputs valueBuildTarget; + pkgsHostHost = tryGetOutputs valueHostHost; + pkgsHostTarget = getOutputs valueHostTarget; + pkgsTargetTarget = tryGetOutputs valueTargetTarget; # Just recur on plain attrsets - else if lib.isAttrs defaultValue then splicer - valueBuildBuild valueBuildHost valueBuildTarget - {} valueHostTarget - valueTargetTarget + } else if lib.isAttrs defaultValue then spliceReal { + pkgsBuildBuild = valueBuildBuild; + pkgsBuildHost = valueBuildHost; + pkgsBuildTarget = valueBuildTarget; + pkgsHostHost = {}; + pkgsHostTarget = valueHostTarget; + pkgsTargetTarget = valueTargetTarget; # Don't be fancy about non-derivations. But we could have used used # `__functor__` for functions instead. - else defaultValue; + } else defaultValue; }; in lib.listToAttrs (map merge (lib.attrNames mash)); - splicedPackages = - if actuallySplice - then - splicer - defaultBuildBuildScope defaultBuildHostScope defaultBuildTargetScope - defaultHostHostScope defaultHostTargetScope - defaultTargetTargetScope - // { - # These should never be spliced under any circumstances - inherit (pkgs) pkgs buildPackages targetPackages - buildPlatform targetPlatform hostPlatform; - } - else pkgs // pkgs.xorg; + splicePackages = { pkgsBuildBuild, pkgsBuildHost, pkgsBuildTarget + , pkgsHostHost, pkgsHostTarget + , pkgsTargetTarget + } @ args: + if actuallySplice then spliceReal args else pkgsHostTarget; + + splicedPackages = splicePackages { + pkgsBuildBuild = defaultBuildBuildScope; + pkgsBuildHost = defaultBuildHostScope; + pkgsBuildTarget = defaultBuildTargetScope; + pkgsHostHost = defaultHostHostScope; + pkgsHostTarget = defaultHostTargetScope; + pkgsTargetTarget = defaultTargetTargetScope; + } // { + # These should never be spliced under any circumstances + inherit (pkgs) pkgs buildPackages targetPackages + buildPlatform targetPlatform hostPlatform; + }; in { + inherit splicedPackages; + # We use `callPackage' to be able to omit function arguments that can be # obtained `pkgs` or `buildPackages` and their `xorg` package sets. Use # `newScope' for sets of packages in `pkgs' (see e.g. `gnome' below). |