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maintainers/scripts/update.nix: refactor package collector

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The `packagesWith` function expected an attrSet but `packagesWithUpdateScript`
could be passing it a derivation or a list when the attribute path
supplied by user through the `--argstr path` argument pointed to one.
It only worked because derivations are also attrSets and contain their
outputs as attributes, and did not work for lists at all.

Additionally, the improper handling would cause the `src` attribute
to be built in some rare cases (`mkYarnPackage` seems to trigger this).

Rewriting the `packagesWith` function to be inductive with a derivation
as a base case and attrSets and lists as inductive steps is much cleaner
and also fixes the unnecessary build.
This commit is contained in:
Jan Tojnar 2020-05-13 10:29:01 +02:00
parent fab2ee8c10
commit 3f3aeb7c85
No known key found for this signature in database
GPG Key ID: 7FAB2A15F7A607A4
1 changed files with 30 additions and 27 deletions
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51
maintainers/scripts/update.nix
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@ -25,26 +25,29 @@ let
in
[x] ++ nubOn f xs;
packagesWith = cond: return: set:
nubOn (pkg: pkg.updateScript)
(lib.flatten
(lib.mapAttrsToList
(name: pkg:
packagesWithPath = relativePath: cond: return: pathContent:
let
result = builtins.tryEval (
if lib.isDerivation pkg
then lib.optional (cond name pkg) (return name pkg)
else if pkg.recurseForDerivations or false || pkg.recurseForRelease or false
then packagesWith cond return pkg
else []
);
result = builtins.tryEval pathContent;
dedupResults = lst: nubOn (pkg: pkg.updateScript) (lib.concatLists lst);
in
if result.success then result.value
if result.success then
let
pathContent = result.value;
in
if lib.isDerivation pathContent then
lib.optional (cond relativePath pathContent) (return relativePath pathContent)
else if lib.isAttrs pathContent then
# If user explicitly points to an attrSet or it is marked for recursion, we recur.
if relativePath == [] || pathContent.recurseForDerivations or false || pathContent.recurseForRelease or false then
dedupResults (lib.mapAttrsToList (name: elem: packagesWithPath (relativePath ++ [name]) cond return elem) pathContent)
else []
)
set
)
);
else if lib.isList pathContent then
dedupResults (lib.imap0 (i: elem: packagesWithPath (relativePath ++ [i]) cond return elem) pathContent)
else []
else [];
packagesWith = packagesWithPath [];
packagesWithUpdateScriptAndMaintainer = maintainer':
let
@ -54,7 +57,7 @@ let
else
builtins.getAttr maintainer' lib.maintainers;
in
packagesWith (name: pkg: builtins.hasAttr "updateScript" pkg &&
packagesWith (relativePath: 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
@ -63,19 +66,19 @@ let
else false
)
)
(name: pkg: pkg)
(relativePath: pkg: pkg)
pkgs;
packagesWithUpdateScript = path:
let
attrSet = lib.attrByPath (lib.splitString "." path) null pkgs;
pathContent = lib.attrByPath (lib.splitString "." path) null pkgs;
in
if attrSet == null then
if pathContent == null then
builtins.throw "Attribute path `${path}` does not exists."
else
packagesWith (name: pkg: builtins.hasAttr "updateScript" pkg)
(name: pkg: pkg)
attrSet;
packagesWith (relativePath: pkg: builtins.hasAttr "updateScript" pkg)
(relativePath: pkg: pkg)
pathContent;
packageByName = name:
let