nevaforget
c9ec8e759b
nixpkgs builds displaylink with requireFile, so every driver version bump (6.2.0-30 -> 6.3.0-48) stopped the system build until the zip was put into the store by hand. pkgs/displaylink.nix overlays requireFile with fetchurl, taking name and hash from nixpkgs and the URL from its requireFile message. Applied in nixosModules.moonarch, since the NixOS module reads pkgs.displaylink directly.
27 lines
1.1 KiB
Nix
27 lines
1.1 KiB
Nix
# ABOUTME: Overlay that lets Nix fetch the DisplayLink driver itself.
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# ABOUTME: Swaps nixpkgs' requireFile for fetchurl, with name, hash and URL taken from nixpkgs.
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# nixpkgs builds displaylink with requireFile, so every new driver version
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# stops the build until the archive is put into the store by hand. nixpkgs keeps
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# name, hash and download URL current, but the URL only appears inside the
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# requireFile message ("nix-prefetch-url --name <name> <url>"). Reading it from
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# there means nothing in this flake has to be maintained per version. Should
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# nixpkgs drop that line, evaluation stops here instead of falling back to the
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# manual step.
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final: prev: {
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displaylink = prev.displaylink.override {
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requireFile =
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args:
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let
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url = builtins.match ".*nix-prefetch-url --name [^ ]+ (https://[^[:space:]]+).*" args.message;
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in
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if url == null then
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throw "displaylink: the nixpkgs requireFile message has no direct-download URL any more, see pkgs/displaylink.nix"
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else
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final.fetchurl {
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inherit (args) name hash;
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url = builtins.head url;
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};
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};
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}
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