sneedmc/flake.nix

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Nix
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{
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description = "A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once (Fork of MultiMC)";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
libnbtplusplus = { url = "github:PolyMC/libnbtplusplus"; flake = false; };
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};
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outputs = { self, nixpkgs, libnbtplusplus, ... }:
let
# User-friendly version number.
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version = builtins.substring 0 8 self.lastModifiedDate;
# Supported systems (qtbase is currently broken for "aarch64-darwin")
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supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" ];
# Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
# Nixpkgs instantiated for supported systems.
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pkgs = forAllSystems (system: nixpkgs.legacyPackages.${system});
packagesFn = pkgs: rec {
polymc = pkgs.libsForQt5.callPackage ./nix { inherit version self libnbtplusplus; };
polymc-qt6 = pkgs.qt6Packages.callPackage ./nix { inherit version self libnbtplusplus; };
};
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in
{
packages = forAllSystems (system:
let packages = packagesFn pkgs.${system}; in
packages // { default = packages.polymc; }
);
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overlay = final: packagesFn;
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};
}