74 lines
1.9 KiB
Nix
74 lines
1.9 KiB
Nix
{
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lib,
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pkgs,
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mixRelease,
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elixir,
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fetchMixDeps,
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}: let
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pname = "frajtano";
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pkg = mixRelease rec {
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inherit pname;
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version = "0.0.1";
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inherit elixir;
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src = builtins.path {
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path = ./.;
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name = "${pname}-source";
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filter = path: _type: baseNameOf path != "flake.nix" && baseNameOf path != "flake.lock";
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};
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# Adapted from https://blog.eigenvalue.net/nix-rerunning-fixed-output-derivations/
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# deps hash should change any time ./mix.lock changes, and not otherwise
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mixFodDeps = let
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deps = fetchMixDeps {
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pname = "mix-deps-${pname}";
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inherit version src;
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sha256 = "sha256-/9Ushiv0z1wJL9FwebUF4gem8IOwlUPnQuDBiXV0Ib8=";
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};
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hash = builtins.substring 11 32 "${./mix.lock}";
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in
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deps.overrideAttrs (attrs: {name = "${deps.name}-${hash}";});
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ELIXIR_MAKE_CACHE_DIR = "/tmp/.elixir-make-cache";
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meta.mainProgram = pname;
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};
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script = pkgs.writeShellScriptBin pname ''
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set -e
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${pkgs.coreutils}/bin/mkdir -p $FRAJTANO_DIR
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file="$FRAJTANO_DIR/cookie"
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(umask 077; [ -f "$file" ] || ${pkgs.coreutils}/bin/head -c 128 /dev/urandom | ${pkgs.coreutils}/bin/base64 -w0 > "$file")
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export RELEASE_COOKIE=$(${pkgs.coreutils}/bin/cat "$file")
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[ -z $RELEASE_NODE ] && export RELEASE_NODE="frajtano-$(${pkgs.coreutils}/bin/whoami)@$(${pkgs.coreutils}/bin/cat /etc/hostname)"
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run() {
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exec ${lib.getExe pkg} "$@"
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}
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list() {
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for i in "$@"; do
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echo "\"$i\", "
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done
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}
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case "''${1:-}" in
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assimilate)
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run rpc ":ok = ~S{$2} |> Frajtano.Agent.assimilate()"
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;;
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spawn)
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shift
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run rpc ":ok = Frajtano.Agent.spawn_peer({\"/usr/bin/env\", [$(list "$@")]})"
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;;
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socket)
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echo $FRAJTANO_DIR/agent.sock
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;;
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*)
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run "$@"
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;;
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esac
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'';
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in
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pkgs.symlinkJoin {
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name = pname;
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paths = [script pkg];
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meta.mainProgram = pname;
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}
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