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mkDerivation: Set meta.position to the source file of the derivation

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This requires Nix 1.7.
This commit is contained in:
Eelco Dolstra 2013-11-19 14:44:05 +01:00
parent 9fc575367d
commit 544475cb45
1 changed files with 18 additions and 5 deletions
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23
pkgs/stdenv/generic/default.nix
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@ -20,6 +20,8 @@ let
allowBroken = builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
unsafeGetAttrPos = builtins.unsafeGetAttrPos or (n: as: null);
stdenvGenerator = setupScript: rec {
# The stdenv that we are producing.
@ -51,12 +53,20 @@ let
# Add a utility function to produce derivations that use this
# stdenv and its shell.
mkDerivation = attrs:
let
pos =
if attrs.meta.description or null != null then
unsafeGetAttrPos "description" attrs.meta
else
unsafeGetAttrPos "name" attrs;
pos' = if pos != null then "‘" + pos.file + ":" + toString pos.line + "’" else "«unknown-file»";
in
if !allowUnfree && (let l = lib.lists.toList attrs.meta.license or []; in lib.lists.elem "unfree" l || lib.lists.elem "unfree-redistributable" l) then
throw "package ‘${attrs.name}’ has an unfree license, refusing to evaluate"
throw "package ‘${attrs.name}’ in ${pos'} has an unfree license, refusing to evaluate"
else if !allowBroken && attrs.meta.broken or false then
throw "you can't use package ‘${attrs.name}’ because it has been marked as broken"
throw "you can't use package ‘${attrs.name}’ in ${pos'} because it has been marked as broken"
else if !allowBroken && attrs.meta.platforms or null != null && !lib.lists.elem result.system attrs.meta.platforms then
throw "the package ‘${attrs.name}’ is not supported on ‘${result.system}’"
throw "the package ‘${attrs.name}’ in ${pos'} is not supported on ‘${result.system}’"
else
lib.addPassthru (derivation (
(removeAttrs attrs ["meta" "passthru" "crossAttrs"])
@ -89,8 +99,11 @@ let
# but it's not part of the actual derivation, i.e., it's not
# passed to the builder and is not a dependency. But since we
# include it in the result, it *is* available to nix-env for
# queries.
meta = attrs.meta or {};
# queries. We also a meta.position attribute here to
# identify the source location of the package.
meta = attrs.meta or {} // (if pos != null then {
position = pos.file + ":" + (toString pos.line);
} else {});
passthru = attrs.passthru or {};
} //
# Pass through extra attributes that are not inputs, but