fix: regression detached-environments not used (prefix-dev#2627)

fixes prefix-dev#2623

---------

Co-authored-by: Bas Zalmstra <bas@prefix.dev>

src/environment.rs

@@ -53,7 +53,7 @@ use xxhash_rust::xxh3::Xxh3;
 /// not present.
 pub async fn verify_prefix_location_unchanged(environment_dir: &Path) -> miette::Result<()> {
     let prefix_file = environment_dir
-        .join("conda-meta")
+        .join(consts::CONDA_META_DIR)
         .join(consts::PREFIX_FILE_NAME);
 
     tracing::info!(
@@ -131,7 +131,7 @@ fn write_file<P: AsRef<Path>, C: AsRef<[u8]>>(path: P, contents: C) -> io::Resul
 /// Give it the environment path to place it.
 fn create_prefix_location_file(environment_dir: &Path) -> miette::Result<()> {
     let prefix_file_path = environment_dir
-        .join("conda-meta")
+        .join(consts::CONDA_META_DIR)
         .join(consts::PREFIX_FILE_NAME);
 
     let parent_dir = prefix_file_path.parent().ok_or_else(|| {
@@ -163,7 +163,7 @@ fn create_prefix_location_file(environment_dir: &Path) -> miette::Result<()> {
 /// Create the conda-meta/history.
 /// This file is needed for `conda run -p .pixi/envs/<env>` to work.
 fn create_history_file(environment_dir: &Path) -> miette::Result<()> {
-    let history_file = environment_dir.join("conda-meta").join("history");
+    let history_file = environment_dir.join(consts::CONDA_META_DIR).join("history");
 
     tracing::info!("Verify history file exists: {}", history_file.display());
 
@@ -309,7 +309,7 @@ pub(crate) fn read_environment_file(
 ///     4. It verifies that the prefix contains a `.gitignore` file.
 pub async fn sanity_check_project(project: &Project) -> miette::Result<()> {
     // Sanity check of prefix location
-    verify_prefix_location_unchanged(project.default_environment().dir().as_path()).await?;
+    verify_prefix_location_unchanged(project.environments_dir().as_path()).await?;
 
     // TODO: remove on a 1.0 release
     // Check for old `env` folder as we moved to `envs` in 0.13.0

tests/integration_python/test_run_cli.py

@@ -1,6 +1,8 @@
 import json
 from pathlib import Path
+
 from .common import EMPTY_BOILERPLATE_PROJECT, verify_cli_command, ExitCode, default_env_path
+
 import tempfile
 import os
 
@@ -274,3 +276,50 @@ def test_run_with_activation(pixi: Path, tmp_pixi_workspace: Path) -> None:
         [pixi, "run", "--manifest-path", manifest, "--force-activate", "task", "-vvv"],
         stdout_contains="test123",
     )
+
+
+def test_detached_environments_run(pixi: Path, tmp_path: Path, dummy_channel_1: str) -> None:
+    tmp_project = tmp_path.joinpath("pixi-project")
+    tmp_project.mkdir()
+    detached_envs_tmp = tmp_path.joinpath("pixi-detached-envs")
+    manifest = tmp_project.joinpath("pixi.toml")
+
+    # Create a dummy project
+    verify_cli_command([pixi, "init", tmp_project, "--channel", dummy_channel_1])
+    verify_cli_command([pixi, "add", "dummy-a", "--no-install", "--manifest-path", manifest])
+
+    # Set detached environments
+    verify_cli_command(
+        [
+            pixi,
+            "config",
+            "set",
+            "--manifest-path",
+            manifest,
+            "--local",
+            "detached-environments",
+            str(detached_envs_tmp),
+        ],
+    )
+
+    # Run the installation
+    verify_cli_command([pixi, "install", "--manifest-path", manifest])
+
+    # Validate the detached environment
+    assert detached_envs_tmp.exists()
+
+    detached_envs_folder = None
+    for folder in detached_envs_tmp.iterdir():
+        if folder.is_dir():
+            detached_envs_folder = folder
+            break
+    assert detached_envs_folder is not None, "Couldn't find detached environment folder"
+
+    # Validate the conda-meta folder exists
+    assert Path(detached_envs_folder).joinpath("envs", "default", "conda-meta").exists()
+
+    # Verify that the detached environment is used
+    verify_cli_command(
+        [pixi, "run", "--manifest-path", manifest, "echo $CONDA_PREFIX"],
+        stdout_contains=f"{detached_envs_tmp}",
+    )