From 6c912b30a2b7c3cc13878ca7ab385d88636f239b Mon Sep 17 00:00:00 2001
From: Wouter Deconinck <wdconinc@gmail.com>
Date: Tue, 26 Mar 2024 21:13:32 -0500
Subject: [PATCH] Codespaces support for rapid PR evaluation  (#41901)

* Create devcontainer.json

* Ensure codespace can be setup for current branch

* fix: find compilers in site scope

* fix: use cloud_pipelines ubuntu20.04 image

* fix: spack config --scope site add

* fix: use develop, not develop-root mirror
---
 .devcontainer/devcontainer.json    |  4 ++++
 .devcontainer/postCreateCommand.sh | 20 ++++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 .devcontainer/devcontainer.json
 create mode 100755 .devcontainer/postCreateCommand.sh

diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000000..ec4c2690b7
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,4 @@
+{
+  "image": "ghcr.io/spack/ubuntu20.04-runner-amd64-gcc-11.4:2023.08.01",
+  "postCreateCommand": "./.devcontainer/postCreateCommand.sh"
+}
diff --git a/.devcontainer/postCreateCommand.sh b/.devcontainer/postCreateCommand.sh
new file mode 100755
index 0000000000..e319719a37
--- /dev/null
+++ b/.devcontainer/postCreateCommand.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Load spack environment at terminal startup
+cat <<EOF >> /root/.bashrc
+. /workspaces/spack/share/spack/setup-env.sh
+EOF
+
+# Load spack environment in this script
+. /workspaces/spack/share/spack/setup-env.sh
+
+# Ensure generic targets for maximum matching with buildcaches
+spack config --scope site add "packages:all:require:[target=x86_64_v3]"
+spack config --scope site add "concretizer:targets:granularity:generic"
+
+# Find compiler and install gcc-runtime
+spack compiler find --scope site
+
+# Setup buildcaches
+spack mirror add --scope site develop https://binaries.spack.io/develop
+spack buildcache keys --install --trust