nix-super/tests/functional/flakes/flake-in-submodule.sh

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#!/usr/bin/env bash
source common.sh
# Tests that:
# - flake.nix may reside inside of a git submodule
# - the flake can access content outside of the submodule
#
# rootRepo
# ├── root.nix
# └── submodule
# ├── flake.nix
# └── sub.nix
requireGit
TODO_NixOS
clearStore
# Submodules can't be fetched locally by default.
# See fetchGitSubmodules.sh
export XDG_CONFIG_HOME=$TEST_HOME/.config
git config --global protocol.file.allow always
rootRepo=$TEST_ROOT/rootRepo
subRepo=$TEST_ROOT/submodule
createGitRepo "$subRepo"
cat > "$subRepo"/flake.nix <<EOF
{
outputs = { self }: {
sub = import ./sub.nix;
root = import ../root.nix;
};
}
EOF
echo '"expression in submodule"' > "$subRepo"/sub.nix
git -C "$subRepo" add flake.nix sub.nix
git -C "$subRepo" commit -m Initial
createGitRepo "$rootRepo"
git -C "$rootRepo" submodule init
git -C "$rootRepo" submodule add "$subRepo" submodule
echo '"expression in root repo"' > "$rootRepo"/root.nix
git -C "$rootRepo" add root.nix
git -C "$rootRepo" commit -m "Add root.nix"
flakeref=git+file://$rootRepo\?submodules=1\&dir=submodule
# Flake can live inside a submodule and can be accessed via ?dir=submodule
[[ $(nix eval --json "$flakeref#sub" ) = '"expression in submodule"' ]]
# The flake can access content outside of the submodule
[[ $(nix eval --json "$flakeref#root" ) = '"expression in root repo"' ]]
# Check that dirtying a submodule makes the entire thing dirty.
[[ $(nix flake metadata --json "$flakeref" | jq -r .locked.rev) != null ]]
echo '"foo"' > "$rootRepo"/submodule/sub.nix
[[ $(nix eval --json "$flakeref#sub" ) = '"foo"' ]]
[[ $(nix flake metadata --json "$flakeref" | jq -r .locked.rev) = null ]]