Changed the order of locaters (#136)

Closes #135 

Rearranged the order of locater since Homebrew can be used to install
Poetry, Anoconda, etc.

---------

Co-authored-by: Don Jayamanne <don.jayamanne@outlook.com>

crates/pet-conda/src/environment_locations.rs

@@ -235,7 +235,7 @@ pub fn get_conda_envs_from_environment_txt(env_vars: &EnvVariables) -> Vec<PathB
         if let Ok(reader) = fs::read_to_string(environment_txt.clone()) {
             trace!("Found environments.txt file {:?}", environment_txt);
             for line in reader.lines() {
-                let line = norm_case(&PathBuf::from(line.to_string()));
+                let line = norm_case(PathBuf::from(line.to_string()));
                 trace!("Conda env in environments.txt file {:?}", line);
                 if line.exists() {
                     envs.push(line);

crates/pet-homebrew/Cargo.toml

@@ -10,6 +10,7 @@ msvc_spectre_libs = { version = "0.1.1", features = ["error"] }
 pet-fs = { path = "../pet-fs" }
 pet-python-utils = { path = "../pet-python-utils" }
 pet-virtualenv = { path = "../pet-virtualenv" }
+pet-conda = { path = "../pet-conda" }
 serde = { version = "1.0.152", features = ["derive"] }
 serde_json = "1.0.93"
 lazy_static = "1.4.0"

crates/pet-homebrew/src/lib.rs

@@ -4,6 +4,7 @@
 use env_variables::EnvVariables;
 use environment_locations::get_homebrew_prefix_bin;
 use environments::get_python_info;
+use pet_conda::utils::is_conda_env;
 use pet_core::{
     env::PythonEnv,
     os_environment::Environment,
@@ -47,6 +48,20 @@ fn from(env: &PythonEnv) -> Option<PythonEnvironment> {
         return None;
     }
 
+    if let Some(prefix) = &env.prefix {
+        if is_conda_env(prefix) {
+            return None;
+        }
+    }
+    // Possible this is a root conda env (hence parent directory is conda install dir).
+    if is_conda_env(env.executable.parent()?) {
+        return None;
+    }
+    // Possible this is a conda env (hence parent directory is Scripts/bin dir).
+    if is_conda_env(env.executable.parent()?.parent()?) {
+        return None;
+    }
+
     // Note: Sometimes if Python 3.10 was installed by other means (e.g. from python.org or other)
     // & then you install Python 3.10 via Homebrew, then some files will get installed via homebrew,
     // However everything (symlinks, Python executable `sys.executable`, `sys.prefix`) eventually point back to the existing installation.

crates/pet/src/locators.rs

@@ -47,18 +47,11 @@ pub fn create_locators(
     }
     // 3. Pyenv Python
     locators.push(Arc::new(PyEnv::from(environment, conda_locator.clone())));
-    // 4. Homebrew Python
-    if cfg!(unix) {
-        #[cfg(unix)]
-        use pet_homebrew::Homebrew;
-        #[cfg(unix)]
-        let homebrew_locator = Homebrew::from(environment);
-        #[cfg(unix)]
-        locators.push(Arc::new(homebrew_locator));
-    }
-    // 5. Conda Python
+
+    // 4. Conda Python
     locators.push(conda_locator);
-    // 6. Support for Virtual Envs
+
+    // 5. Support for Virtual Envs
     // The order of these matter.
     // Basically PipEnv is a superset of VirtualEnvWrapper, which is a superset of Venv, which is a superset of VirtualEnv.
     locators.push(poetry_locator);
@@ -68,6 +61,16 @@ pub fn create_locators(
     // VirtualEnv is the most generic, hence should be the last.
     locators.push(Arc::new(VirtualEnv::new()));
 
+    // 6. Homebrew Python
+    if cfg!(unix) {
+        #[cfg(unix)]
+        use pet_homebrew::Homebrew;
+        #[cfg(unix)]
+        let homebrew_locator = Homebrew::from(environment);
+        #[cfg(unix)]
+        locators.push(Arc::new(homebrew_locator));
+    }
+
     // 7. Global Mac Python
     // 8. CommandLineTools Python & xcode
     if std::env::consts::OS == "macos" {