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|
{
lib,
callPackage,
newScope,
}:
let
toPackageName = name: version: "${name}_${lib.replaceStrings [ "." ] [ "_" ] version}";
in
lib.makeScope newScope (
self:
let
# Not public, so do not expose to the package set
buildUniversePackage = self.callPackage ./build-universe-package.nix { typstPackages = self; };
# Creates a versioned package out of a name, version, and packageSpec
makeVersionedPackage = pname: version: packageSpec: {
name = toPackageName pname version;
value = buildUniversePackage {
homepage = packageSpec.homepage or null;
inherit pname version;
inherit (packageSpec)
hash
description
license
typstDeps
;
};
};
# Create a derivation for each package. This is in the format of
# typstPackages.${package}_version
versionedPackages = lib.pipe (lib.importTOML ./typst-packages-from-universe.toml) [
# 1. Create a list of versioned packages
# Only recurse 2 levels deep because the leaf attrs are the pkgspec attrs
(lib.mapAttrsToListRecursiveCond (path: _: (lib.length path) < 2) (
path:
let
# Path is always [ path version ]
pname = lib.head path;
version = lib.last path;
in
makeVersionedPackage pname version
))
# 2. Transform the list into a flat attrset
lib.listToAttrs
];
# Take two version strings and return the newer one
selectNewerVersion = v1: v2: if lib.versionOlder v1 v2 then v2 else v1;
# Select the latest version of each package to represent the
# unversioned derivation in the format of:
# typstPackages.${package}
latestPackages = lib.pipe (lib.importTOML ./typst-packages-from-universe.toml) [
# Take in the attrset of each package and all its versions
# Compare each version and find the latest one.
# Then select it from the versioned package set
(lib.mapAttrs (
pname: versions:
let
latestVersion = lib.foldl' selectNewerVersion "0.0.0" (lib.attrNames versions);
in
versionedPackages.${toPackageName pname latestVersion}
))
];
in
versionedPackages // latestPackages
)
|
