From 00994a2daf7557737538a4cee6e8cff4958aecfe Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Thu, 4 Jun 2020 10:09:58 -0400
Subject: [PATCH] Advise use of nix-shell and hide the particulars
---
README.rst | 4 ++--
shell.nix | 18 ++++++++++++++++++
2 files changed, 20 insertions(+), 2 deletions(-)
create mode 100644 shell.nix
diff --git a/README.rst b/README.rst
index 7bd9f0fc..74ee0105 100644
--- a/README.rst
+++ b/README.rst
@@ -8,9 +8,9 @@ Building
The build system uses `Nix`_ which must be installed before anything can be built.
Builds are tested against a particular nixpkgs revision.
-Start by exporting ``NIX_PATH`` to ensure you use the same revision::
+Start by setting up the development/operations environment::
- $ export NIX_PATH=nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/$(cat nixpkgs.rev).tar.gz
+ $ nix-shell
Documentation
~~~~~~~~~~~~~
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 00000000..c9773565
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,18 @@
+{ pkgs ? import <nixpkgs> { } }:
+let
+ nixpkgs-rev = builtins.readFile ./nixpkgs.rev;
+ morph-src = pkgs.fetchFromGitHub {
+ owner = "DBCDK";
+ repo = "morph";
+ rev = "v1.4.0";
+ hash = "sha256:1y6clzi8sfnrv4an26b44r24nnxds1kj9aw3lmjbgxl9yrxxsj1k";
+ };
+ morph = pkgs.callPackage (morph-src + "/nix-packaging") { };
+in
+pkgs.mkShell {
+ NIX_PATH = "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/${nixpkgs-rev}.tar.gz";
+
+ buildInputs = [
+ morph
+ ];
+}
--
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