From fc8e2e74190b70bec8b09da403858e17eba532df Mon Sep 17 00:00:00 2001
From: Luke Granger-Brown <hg@lukegb.com>
Date: Sat, 9 May 2020 11:14:07 +0100
Subject: [PATCH] ci-root: rework to using linkFarm derivation

---
 .gitlab-ci.yml |  4 ++--
 ci-root.nix    | 13 ++++++++++---
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f8538364d8..0caee890b2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,8 +5,8 @@ nixCache:
     - "cp ${OPS_SECRETS_DEFAULT_NIX} ops/secrets/default.nix"
     - "test -d cache || mkdir cache"
     - "nix-build ./ci-root.nix --option substituters \"file://$PWD/cache?trusted=1 https://cache.nixos.org s3://lukegb-nix-cache?endpoint=storage.googleapis.com&trusted=1\""
-    - "nix copy --to 'file://cache' -f ./ci-root.nix"
-    - "nix copy --to 's3://lukegb-nix-cache?endpoint=storage.googleapis.com' -f ./ci-root.nix"
+    - "nix copy --to 'file://cache' ./result"
+    - "nix copy --to 's3://lukegb-nix-cache?endpoint=storage.googleapis.com' ./result"
   cache:
     key: one-key-to-rule-them-all
     paths:
diff --git a/ci-root.nix b/ci-root.nix
index 89a002fdab..93cdbd6730 100644
--- a/ci-root.nix
+++ b/ci-root.nix
@@ -1,3 +1,10 @@
-with (import ./default.nix {}); [
-  ops.nixos
-]
+let
+  depot = (import ./default.nix {});
+  pkgs = depot.third_party.nixpkgs;
+  lib = pkgs.lib;
+  prefixAttrs = prefix: lib.mapAttrsToList (name: value: { name = "${prefix}-${name}"; path = value; });
+  ciMachines = prefixAttrs "machine" depot.ops.nixos;
+  ciPackages = prefixAttrs "pkg" depot.nix.pkgs;
+in
+pkgs.linkFarm "ci" ciMachines
+