46 lines
1.3 KiB
Nix
46 lines
1.3 KiB
Nix
{
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description = "NPM project (dev shell + run, auto-install deps)";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
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flake-utils.url = "github:numtide/flake-utils";
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};
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outputs = { self, nixpkgs, flake-utils }:
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flake-utils.lib.eachDefaultSystem (system:
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let
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pkgs = import nixpkgs { inherit system; };
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node = pkgs.nodejs_22; # or pkgs.nodejs_20
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start = pkgs.writeShellApplication {
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name = "start";
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runtimeInputs = [ node ];
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text = ''
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set -euo pipefail
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export npm_config_cache="$PWD/.npm-cache"
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if [ -f package-lock.json ]; then cmd=ci; else cmd=install; fi
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echo "→ npm $cmd (nix run)"
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${node}/bin/npm "$cmd"
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exec ${node}/bin/npm run dev -- "$@"
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'';
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};
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in
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{
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devShells.default = pkgs.mkShell {
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buildInputs = [ node ];
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shellHook = ''
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set -euo pipefail
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export npm_config_cache="$PWD/.npm-cache"
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if [ -f package-lock.json ]; then cmd=ci; else cmd=install; fi
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echo "→ npm $cmd (dev shell)"
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${node}/bin/npm "$cmd"
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'';
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};
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apps.default = {
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type = "app";
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program = "${start}/bin/start";
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};
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});
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}
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