maintainers/default.nix

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2024-07-08 19:37:49 +00:00
{ pkgs ? import <nixpkgs> {}, ... }: let
inherit (builtins) genericClosure hasAttr length map;
inherit (pkgs) runCommandLocal writeText;
inherit (pkgs.lib) concatLines concatLists concatMap filter isDerivation isList mapAttrsToList;
in rec {
drvOutputs = drv: if hasAttr "outputs" drv then map (out: drv.${out}) drv.outputs else [ drv ];
drvDeps = drv:
mapAttrsToList (k: v:
if isDerivation v then (drvOutputs v)
else if isList v then concatMap drvOutputs (filter isDerivation v)
else []
) drv;
drvClosure = let
wrap = drv: { key = drv.outPath; inherit drv; };
in drv: map (obj: obj.drv) (genericClosure {
startSet = map wrap (drvOutputs drv);
operator = obj: map wrap (concatLists (drvDeps obj.drv.drvAttrs));
});
drvMaintainers = drv:
if ! hasAttr "meta" drv then []
else if ! hasAttr "maintainers" drv.meta then []
else drv.meta.maintainers;
nobodyMaintains = drv:
hasAttr "meta" drv &&
hasAttr "maintainers" drv.meta &&
(length drv.meta.maintainers) == 0;
stringJoin = objToString: objs: writeText "txt" (concatLines (map objToString objs));
allMaintainers = drv: let
closure = drvClosure drv;
maintainers = concatMap drvMaintainers closure;
mainToString = m: "${m.name} (${m.email})";
in runCommandLocal "uniq-maintainers.txt" {} ''
<${stringJoin mainToString maintainers} sort | uniq -c > $out
'';
noMaintainers = drv: let
closure = drvClosure drv;
unmaintained = filter nobodyMaintains closure;
drvToString = drv: "${drv.name} ${drv.meta.position}";
in runCommandLocal "no-maintainers.txt" {} ''
<${stringJoin drvToString unmaintained} sort -u \
| sed 's/\/nix\/store\/[^/]*/https:\/\/github.com\/NixOS\/nixpkgs\/blob\/master/' \
| sed 's/.nix:\(.*\)$/#L\1/' \
| ${pkgs.unixtools.column}/bin/column -t \
> $out
'';
}