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Merge pull request #2455 from bjornfor/helpful-messages-when-refusing-eval

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More helpful message when refusing to evaluate "broken" package
This commit is contained in:
Vladimír Čunát 2014-08-12 20:18:10 +02:00
commit e80f41f35e
1 changed files with 18 additions and 7 deletions
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25
pkgs/stdenv/generic/default.nix
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@ -29,6 +29,16 @@ let
allowBroken = config.allowBroken or false || builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
forceEvalHelp = unfreeOrBroken:
assert (unfreeOrBroken == "Unfree" || unfreeOrBroken == "Broken");
''
You can set
{ nixpkgs.config.allow${unfreeOrBroken} = true; }
in configuration.nix to override this. If you use Nix standalone, you can add
{ allow${unfreeOrBroken} = true; }
to ~/.nixpkgs/config.nix.
'';
unsafeGetAttrPos = builtins.unsafeGetAttrPos or (n: as: null);
# The stdenv that we are producing.
@ -76,15 +86,16 @@ let
in
if !allowUnfree && (let l = lib.lists.toList attrs.meta.license or []; in lib.lists.elem "unfree" l || lib.lists.elem "unfree-redistributable" l) && !(allowUnfreePredicate attrs) then
throw ''
Package ‘${attrs.name}’ in ${pos'} has an unfree license, refusing to evaluate. You can set
{ nixpkgs.config.allowUnfree = true; }
in configuration.nix to override this. If you use Nix standalone, you can add
{ allowUnfree = true; }
to ~/.nixpkgs/config.nix.''
Package ‘${attrs.name}’ in ${pos'} has an unfree license, refusing to evaluate.
${forceEvalHelp "Unfree"}''
else if !allowBroken && attrs.meta.broken or false then
throw "you can't use package ‘${attrs.name}’ in ${pos'} because it has been marked as broken"
throw ''
Package ‘${attrs.name}’ in ${pos'} is marked as broken, refusing to evaluate.
${forceEvalHelp "Broken"}''
else if !allowBroken && attrs.meta.platforms or null != null && !lib.lists.elem result.system attrs.meta.platforms then
throw "the package ‘${attrs.name}’ in ${pos'} is not supported on ‘${result.system}’"
throw ''
Package ‘${attrs.name}’ in ${pos'} is not supported on ‘${result.system}’, refusing to evaluate.
${forceEvalHelp "Broken"}''
else
lib.addPassthru (derivation (
(removeAttrs attrs ["meta" "passthru" "crossAttrs"])