nixpkgs/maintainers/scripts/update.nix
Jan Tojnar c485a932d9
maintainers/scripts/update.nix: Do not traverse lists
Lists items are not directly accessible like attributes in attrsets are.
This makes it hard to represent their address in `UPDATE_NIX_ATTR_PATH`
environment variable passed to update scripts.

Given that I only introduced list support for `gnome3` attribute set
and we stopped using them there, let’s remove the list support again.
NixOS modules are better place for package collections anyway.

This was meant to go in with https://github.com/NixOS/nixpkgs/pull/98304
but got accidentally omitted somehow.
2020-12-16 10:14:59 +01:00

201 lines
6.9 KiB
Nix
Executable file

{ package ? null
, maintainer ? null
, path ? null
, max-workers ? null
, include-overlays ? false
, keep-going ? null
, commit ? null
}:
# TODO: add assert statements
let
pkgs = import ./../../default.nix (
if include-overlays == false then
{ overlays = []; }
else if include-overlays == true then
{ } # Let Nixpkgs include overlays impurely.
else { overlays = include-overlays; }
);
inherit (pkgs) lib;
/* Remove duplicate elements from the list based on some extracted value. O(n^2) complexity.
*/
nubOn = f: list:
if list == [] then
[]
else
let
x = lib.head list;
xs = lib.filter (p: f x != f p) (lib.drop 1 list);
in
[x] ++ nubOn f xs;
/* Recursively find all packages (derivations) in `pkgs` matching `cond` predicate.
Type: packagesWithPath :: AttrPath (AttrPath derivation bool) AttrSet List<AttrSet{attrPath :: str; package :: derivation; }>
AttrPath :: [str]
The packages will be returned as a list of named pairs comprising of:
- attrPath: stringified attribute path (based on `rootPath`)
- package: corresponding derivation
*/
packagesWithPath = rootPath: cond: pkgs:
let
packagesWithPathInner = path: pathContent:
let
result = builtins.tryEval pathContent;
dedupResults = lst: nubOn ({ package, attrPath }: package.updateScript) (lib.concatLists lst);
in
if result.success then
let
evaluatedPathContent = result.value;
in
if lib.isDerivation evaluatedPathContent then
lib.optional (cond path evaluatedPathContent) { attrPath = lib.concatStringsSep "." path; package = evaluatedPathContent; }
else if lib.isAttrs evaluatedPathContent then
# If user explicitly points to an attrSet or it is marked for recursion, we recur.
if path == rootPath || evaluatedPathContent.recurseForDerivations or false || evaluatedPathContent.recurseForRelease or false then
dedupResults (lib.mapAttrsToList (name: elem: packagesWithPathInner (path ++ [name]) elem) evaluatedPathContent)
else []
else []
else [];
in
packagesWithPathInner rootPath pkgs;
/* Recursively find all packages (derivations) in `pkgs` matching `cond` predicate.
*/
packagesWith = packagesWithPath [];
/* Recursively find all packages in `pkgs` with updateScript by given maintainer.
*/
packagesWithUpdateScriptAndMaintainer = maintainer':
let
maintainer =
if ! builtins.hasAttr maintainer' lib.maintainers then
builtins.throw "Maintainer with name `${maintainer'} does not exist in `maintainers/maintainer-list.nix`."
else
builtins.getAttr maintainer' lib.maintainers;
in
packagesWith (path: pkg: builtins.hasAttr "updateScript" pkg &&
(if builtins.hasAttr "maintainers" pkg.meta
then (if builtins.isList pkg.meta.maintainers
then builtins.elem maintainer pkg.meta.maintainers
else maintainer == pkg.meta.maintainers
)
else false
)
);
/* Recursively find all packages under `path` in `pkgs` with updateScript.
*/
packagesWithUpdateScript = path: pkgs:
let
prefix = lib.splitString "." path;
pathContent = lib.attrByPath prefix null pkgs;
in
if pathContent == null then
builtins.throw "Attribute path `${path}` does not exists."
else
packagesWithPath prefix (path: pkg: builtins.hasAttr "updateScript" pkg)
pathContent;
/* Find a package under `path` in `pkgs` and require that it has an updateScript.
*/
packageByName = path: pkgs:
let
package = lib.attrByPath (lib.splitString "." path) null pkgs;
in
if package == null then
builtins.throw "Package with an attribute name `${path}` does not exists."
else if ! builtins.hasAttr "updateScript" package then
builtins.throw "Package with an attribute name `${path}` does not have a `passthru.updateScript` attribute defined."
else
{ attrPath = path; inherit package; };
/* List of packages matched based on the CLI arguments.
*/
packages =
if package != null then
[ (packageByName package pkgs) ]
else if maintainer != null then
packagesWithUpdateScriptAndMaintainer maintainer pkgs
else if path != null then
packagesWithUpdateScript path pkgs
else
builtins.throw "No arguments provided.\n\n${helpText}";
helpText = ''
Please run:
% nix-shell maintainers/scripts/update.nix --argstr maintainer garbas
to run all update scripts for all packages that lists \`garbas\` as a maintainer
and have \`updateScript\` defined, or:
% nix-shell maintainers/scripts/update.nix --argstr package gnome3.nautilus
to run update script for specific package, or
% nix-shell maintainers/scripts/update.nix --argstr path gnome3
to run update script for all package under an attribute path.
You can also add
--argstr max-workers 8
to increase the number of jobs in parallel, or
--argstr keep-going true
to continue running when a single update fails.
You can also make the updater automatically commit on your behalf from updateScripts
that support it by adding
--argstr commit true
'';
/* Transform a matched package into an object for update.py.
*/
packageData = { package, attrPath }: {
name = package.name;
pname = lib.getName package;
oldVersion = lib.getVersion package;
updateScript = map builtins.toString (lib.toList (package.updateScript.command or package.updateScript));
supportedFeatures = package.updateScript.supportedFeatures or [];
attrPath = package.updateScript.attrPath or attrPath;
};
/* JSON file with data for update.py.
*/
packagesJson = pkgs.writeText "packages.json" (builtins.toJSON (map packageData packages));
optionalArgs =
lib.optional (max-workers != null) "--max-workers=${max-workers}"
++ lib.optional (keep-going == "true") "--keep-going"
++ lib.optional (commit == "true") "--commit";
args = [ packagesJson ] ++ optionalArgs;
in pkgs.stdenv.mkDerivation {
name = "nixpkgs-update-script";
buildCommand = ''
echo ""
echo "----------------------------------------------------------------"
echo ""
echo "Not possible to update packages using \`nix-build\`"
echo ""
echo "${helpText}"
echo "----------------------------------------------------------------"
exit 1
'';
shellHook = ''
unset shellHook # do not contaminate nested shells
exec ${pkgs.python3.interpreter} ${./update.py} ${builtins.concatStringsSep " " args}
'';
}