support Guix and Nix shell

guix.scm

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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2021, 2022 Attila Lendvai <[email protected]>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+
+;; Note that this file is half-baked: it's enough for `guix shell`,
+;; but it's not detailed enough to build/install the package using Guix.
+
+;; To enter a shell with the necessary dependencies for development:
+;;   guix shell
+;;
+;; To build and install:
+;;   guix package -f guix.scm
+;;
+;; To build it, but not install it:
+;;   guix build -f guix.scm
+;;
+
+(use-modules
+ (gnu packages node)
+ (git)
+ (guix build-system node)
+ (guix gexp)
+ (guix git)
+ (guix git-download)
+ ((guix licenses) #:prefix license:)
+ (guix packages))
+
+(define *source-dir* (dirname (current-filename)))
+
+(define *with-worktree-changes* #false)
+
+(define (latest-git-commit-hash dir)
+  (with-repository dir repo
+    (oid->string (object-id (revparse-single repo "HEAD")))))
+
+(package
+  (name "swarm-cli")
+  (version "dev")
+  (source (if *with-worktree-changes*
+              (local-file *source-dir*
+                          #:recursive? #t
+                          #:select? (git-predicate *source-dir*))
+              (git-checkout (url *source-dir*)
+                            (branch "master"))))
+  (build-system node-build-system)
+  (home-page "https://github.com/ethersphere/swarm-cli")
+  (synopsis "")
+  (description "")
+  (license license:bsd-3))

shell.nix

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+# This is a descriptor for the Nix package manager.
+# Invoke nix-shell in this directory to enter an environment where
+# everything gets downloaded and made available for development.
+
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    coreutils diffutils
+    bash-completion less
+    gitFull
+    nodejs
+
+    # keep this line if you use bash
+    bashInteractive
+  ];
+}