/**
  Instantiate the library tests for a given Nix version.

  IMPORTANT:
  This is used by the github.com/NixOS/nix CI.
  This is used by Lix's CI (see flake.nix in the Lix repo).

  Try not to change the interface of this file, or if you need to, ping the
  Nix AND Lix maintainers (`nix eval -f . lib.teams.lix`) for help. Thank you!
*/
{
  pkgs,
  lib,
  # Only ever use this nix; see comment at top
  nix,
}:

pkgs.runCommand "nixpkgs-lib-tests-nix-${nix.version}"
  {
    buildInputs = [
      (import ./check-eval.nix)
      (import ./fetchers.nix)
      (import ../path/tests {
        inherit pkgs;
      })
    ];
    nativeBuildInputs = [
      nix
      pkgs.gitMinimal
    ] ++ lib.optional pkgs.stdenv.hostPlatform.isLinux pkgs.inotify-tools;
    strictDeps = true;
  }
  ''
    datadir="${nix}/share"
    export TEST_ROOT=$(pwd)/test-tmp
    export HOME=$(mktemp -d)
    export NIX_BUILD_HOOK=
    export NIX_CONF_DIR=$TEST_ROOT/etc
    export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
    export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
    export NIX_STATE_DIR=$TEST_ROOT/var/nix
    export NIX_STORE_DIR=$TEST_ROOT/store
    export PAGER=cat
    cacheDir=$TEST_ROOT/binary-cache

    nix-store --init

    cp -r ${../.} lib
    echo "Running lib/tests/modules.sh"
    bash lib/tests/modules.sh

    echo "Checking lib.version"
    nix-instantiate lib -A version --eval || {
      echo "lib.version does not evaluate when lib is isolated from the rest of the nixpkgs tree"
      exit 1
    }

    echo "Running lib/tests/filesystem.sh"
    TEST_LIB=$PWD/lib bash lib/tests/filesystem.sh

    echo "Running lib/tests/sources.sh"
    TEST_LIB=$PWD/lib bash lib/tests/sources.sh

    echo "Running lib/tests/network.sh"
    TEST_LIB=$PWD/lib bash lib/tests/network.sh

    echo "Running lib/fileset/tests.sh"
    TEST_LIB=$PWD/lib bash lib/fileset/tests.sh

    echo "Running lib/tests/systems.nix"
    [[ $(nix-instantiate --eval --strict lib/tests/systems.nix | tee /dev/stderr) == '[ ]' ]];

    mkdir $out
    echo success > $out/${nix.version}
  ''