lib: Add getName to mirror getVersion

2019-11-24 16:24:50 +00:00
parent 62d6429793
commit 84a105254d
2 changed files with 19 additions and 1 deletions
@@ -472,6 +472,23 @@ rec {
  */
  versionAtLeast = v1: v2: !versionOlder v1 v2;

+  /* This function takes an argument that's either a derivation or a
+     derivation's "name" attribute and extracts the name part from that
+     argument.
+
+     Example:
+       getName "youtube-dl-2016.01.01"
+       => "youtube-dl"
+       getName pkgs.youtube-dl
+       => "youtube-dl"
+  */
+  getName = x:
+   let
+     parse = drv: (builtins.parseDrvName drv).name;
+   in if isString x
+      then parse x
+      else x.pname or (parse x.name);
+
  /* This function takes an argument that's either a derivation or a
     derivation's "name" attribute and extracts the version part from that
     argument.