nixpkgs.lib: Add types.strMatching

2017-12-02 13:04:16 -05:00
parent 6281eb123b
commit 83048c4fe0
2 changed files with 13 additions and 0 deletions
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -174,6 +174,13 @@ rec {
      merge = mergeOneOption;
    };

+    strMatching = pattern: mkOptionType {
+      name = "strMatching ${escapeNixString pattern}";
+      description = "string matching the pattern ${pattern}";
+      check = x: str.check x && builtins.match pattern x != null;
+      inherit (str) merge;
+    };
+
    # Merge multiple definitions by concatenating them (with the given
    # separator between the values).
    separatedString = sep: mkOptionType rec {