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Merge pull request #6272 from NixOS/types-path-better-error

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types.nix: better error message for non-paths
This commit is contained in:
Benno Fünfstück 2015-08-15 13:16:00 +02:00
commit e6f1e1e5db
2 changed files with 3 additions and 2 deletions
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3
lib/types.nix
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@ -103,7 +103,8 @@ rec {
path = mkOptionType {
name = "path";
# Hacky: there is no ‘isPath’ primop.
check = x: builtins.substring 0 1 (toString x) == "/";
# need to check isString first because otherwise toString throws an error.
check = x: builtins.isString x && builtins.substring 0 1 (toString x) == "/";
merge = mergeOneOption;
};

2
nixos/modules/config/system-path.nix
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@ -57,7 +57,7 @@ in
environment = {
systemPackages = mkOption {
type = types.listOf types.path;
type = types.listOf types.package;
default = [];
example = literalExample "[ pkgs.firefox pkgs.thunderbird ]";
description = ''