diff options
| author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-10-05 13:45:27 -0400 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-10-05 13:48:57 -0400 |
| commit | e0be32f6760e26aab599a09ee2b4d71b4497f7e8 (patch) | |
| tree | 58d78ddf5ec2b2ee3cc941a9666fb7041fba0771 /pkgs/lib/strings.nix | |
| parent | 172abb4b26e0453300fa873c5256f4b171258486 (diff) | |
| download | nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.tar nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.tar.gz nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.tar.bz2 nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.tar.lz nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.tar.xz nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.tar.zst nixpkgs-e0be32f6760e26aab599a09ee2b4d71b4497f7e8.zip | |
Add a function ‘getVersion’ to get the version of a derivation
Diffstat (limited to 'pkgs/lib/strings.nix')
| -rw-r--r-- | pkgs/lib/strings.nix | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pkgs/lib/strings.nix b/pkgs/lib/strings.nix index 4bd7a5bebde..19d1738182f 100644 --- a/pkgs/lib/strings.nix +++ b/pkgs/lib/strings.nix @@ -155,6 +155,12 @@ rec { # Return true iff string v1 denotes a version older than v2. versionOlder = v1: v2: builtins.compareVersions v2 v1 == 1; + + # Get the version of the specified derivation, as specified in its + # ‘name’ attribute. + getVersion = drv: (builtins.parseDrvName drv.name).version; + + # Extract name with version from URL. Ask for separator which is # supposed to start extension nameFromURL = url: sep: let |