diff options
Diffstat (limited to 'nixpkgs/nixos/modules/misc/label.nix')
| -rw-r--r-- | nixpkgs/nixos/modules/misc/label.nix | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/nixpkgs/nixos/modules/misc/label.nix b/nixpkgs/nixos/modules/misc/label.nix index 02b91555b3c2..b97cbaa26304 100644 --- a/nixpkgs/nixos/modules/misc/label.nix +++ b/nixpkgs/nixos/modules/misc/label.nix @@ -11,7 +11,7 @@ in options.system = { nixos.label = mkOption { - type = types.str; + type = types.strMatching "[a-zA-Z0-9:_\\.-]*"; description = '' NixOS version name to be used in the names of generated outputs and boot labels. @@ -19,6 +19,9 @@ in If you ever wanted to influence the labels in your GRUB menu, this is the option for you. + It can only contain letters, numbers and the following symbols: + <literal>:</literal>, <literal>_</literal>, <literal>.</literal> and <literal>-</literal>. + The default is <option>system.nixos.tags</option> separated by "-" + "-" + <envar>NIXOS_LABEL_VERSION</envar> environment variable (defaults to the value of |