motd/flake.nix

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{
description = "A flake of MOTD files.";
inputs.nixpkgs.url = github:NixOS/nixpkgs;
inputs.flake-utils.url = github:numtide/flake-utils;
outputs = { self, nixpkgs, flake-utils }:
let
motdFiles = {
"40k" = ./40k-thought-for-the-day.txt;
rebirth = ./boi-rebirth-fortunes.txt;
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bofh = ./bofh-excuses.txt;
discordium = ./discordium.txt;
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};
in
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
motd = pkgs.stdenv.mkDerivation {
pname = "motd";
version = "1.0";
builder = builtins.toFile "motd-builder.sh" ''
source $stdenv/setup
mkdir -p $out
${builtins.foldl'
(a: b: "${a}\n${b}")
""
(map
(attr: "cp ${motdFiles.${attr}} $out/${attr}.txt")
(builtins.attrNames motdFiles))}
'';
};
in
{
defaultPackage = motd;
}
);
}