Use nixpkgs functions to check dovecot version

2018-05-13 03:17:22 +02:00
parent 1c76e0a119
commit 410c6c410b
3 changed files with 3 additions and 21 deletions
--- a/mail-server/systemd.nix
+++ b/mail-server/systemd.nix
@@ -19,11 +19,8 @@
 let
  cfg = config.mailserver;

-  createDhParameterFile = let
-     dovecotVersion = builtins.fromJSON
-       (builtins.readFile (pkgs.callPackage ./dovecot-version.nix {}));
-    in lib.optionalString
-      (dovecotVersion.major == 2 && dovecotVersion.minor >= 3)
+  createDhParameterFile =
+    lib.optionalString (lib.versionAtLeast (lib.getVersion pkgs.dovecot) "2.3")
      ''
        # Create a dh parameter file
        if [ ! -s "${cfg.certificateDirectory}/dh.pem" ]