From eb06a435aba269e35837f583693878a9f3941449 Mon Sep 17 00:00:00 2001
From: Andreas Rammhold <andreas@rammhold.de>
Date: Wed, 13 May 2020 20:30:10 +0200
Subject: [PATCH] Add devShell for faster feedback

This adds a `devShell` which unlike `runHydra` doesn't start hydra
automatically and doesn't receive hydra as build input. It is better
suited for interactive development cycles:

```
$ nix-shell -A devShell
$ ./bootstrap
$ configurePhase
$ make
$ # hack hack hack
$ foreman start
  # test test test
  <C-c>
$ # hack hack hack
```
---
 flake.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/flake.nix b/flake.nix
index f8e316f8..3135de4d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -294,6 +294,15 @@
       };
 
       runHydra = pkgs.callPackage ./run-hydra.nix {};
+      devShell = pkgs.hydra.overrideAttrs (old: {
+        buildInputs = old.buildInputs ++ [ pkgs.foreman pkgs.netcat ];
+        shellHook = old.shellHook + ''
+          export HYDRA_HOME="src/"
+          mkdir -p .hydra-data
+          export HYDRA_DATA="$(pwd)/.hydra-data"
+          export HYDRA_DBI='dbi:Pg:dbname=hydra;host=localhost;'
+        '';
+      });
 
       nixosModules.hydraTest = {
         imports = [ self.nixosModules.hydra ];