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nixos: cleanup version module, allow setting nixosVersion with env variable

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This commit is contained in:
Jan Malakhovski 2015-09-18 13:46:47 +00:00
parent a99a634acf
commit 732eb3c4cc
1 changed files with 27 additions and 21 deletions
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48
nixos/modules/misc/version.nix
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@ -2,13 +2,21 @@
with lib;
let
cfg = config.system;
releaseFile = "${toString pkgs.path}/.version";
suffixFile = "${toString pkgs.path}/.version-suffix";
revisionFile = "${toString pkgs.path}/.git-revision";
in
{
options = {
options.system = {
system.stateVersion = mkOption {
stateVersion = mkOption {
type = types.str;
default = config.system.nixosRelease;
default = cfg.nixosRelease;
description = ''
Every once in a while, a new NixOS release may change
configuration defaults in a way incompatible with stateful
@ -22,38 +30,40 @@ with lib;
'';
};
system.nixosVersion = mkOption {
nixosVersion = mkOption {
internal = true;
type = types.str;
description = "NixOS version.";
};
system.nixosRelease = mkOption {
nixosRelease = mkOption {
readOnly = true;
type = types.str;
default = readFile "${toString pkgs.path}/.version";
default = readFile releaseFile;
description = "NixOS release.";
};
system.nixosVersionSuffix = mkOption {
nixosVersionSuffix = mkOption {
internal = true;
type = types.str;
default = if pathExists suffixFile then readFile suffixFile else "pre-git";
description = "NixOS version suffix.";
};
system.nixosRevision = mkOption {
nixosRevision = mkOption {
internal = true;
type = types.str;
default = if pathExists revisionFile then readFile revisionFile else "master";
description = "NixOS Git revision hash.";
};
system.nixosCodeName = mkOption {
nixosCodeName = mkOption {
readOnly = true;
type = types.str;
description = "NixOS release code name.";
};
system.defaultChannel = mkOption {
defaultChannel = mkOption {
internal = true;
type = types.str;
default = https://nixos.org/channels/nixos-unstable;
@ -64,18 +74,14 @@ with lib;
config = {
system.nixosVersion = mkDefault (config.system.nixosRelease + config.system.nixosVersionSuffix);
system = {
# This is set here rather than up there so that changing this
# env variable will not rebuild the manual
nixosVersion = mkDefault (maybeEnv "NIXOS_VERSION" (cfg.nixosRelease + cfg.nixosVersionSuffix));
system.nixosVersionSuffix =
let suffixFile = "${toString pkgs.path}/.version-suffix"; in
mkDefault (if pathExists suffixFile then readFile suffixFile else "pre-git");
system.nixosRevision =
let fn = "${toString pkgs.path}/.git-revision"; in
mkDefault (if pathExists fn then readFile fn else "master");
# Note: code names must only increase in alphabetical order.
system.nixosCodeName = "Emu";
# Note: code names must only increase in alphabetical order.
nixosCodeName = "Emu";
};
# Generate /etc/os-release. See
# http://0pointer.de/public/systemd-man/os-release.html for the