activate: use less aggressive PATH modifications by default

Use `settings set activate_aggressive 1` to disable this change.

Fixes #863

schema/mise.json

@@ -221,6 +221,10 @@
       ]
     },
     "settings": {
+      "activate_aggressive": {
+        "description": "push tools to the front of PATH instead of allowing modifications of PATH after activation to take precedence",
+        "type": "boolean"
+      },
       "all_compile": {
         "description": "do not use precompiled binaries for any tool",
         "type": "boolean"

src/cli/hook_env.rs

@@ -104,7 +104,7 @@ impl HookEnv {
             .to_string();
         let (pre, post) = match &*env::__MISE_ORIG_PATH {
             Some(orig_path) => match full.split_once(&format!(":{orig_path}")) {
-                Some((pre, post)) if settings.experimental => {
+                Some((pre, post)) if !settings.activate_aggressive => {
                     (pre.to_string(), (orig_path.to_string() + post))
                 }
                 _ => (String::new(), full),

src/cli/settings/ls.rs

@@ -45,6 +45,7 @@ mod tests {
     fn test_settings_ls() {
         reset_config();
         assert_cli_snapshot!("settings", @r###"
+        activate_aggressive = false
         all_compile = false
         always_keep_download = true
         always_keep_install = true

src/cli/settings/set.rs

@@ -96,6 +96,7 @@ pub mod tests {
         );
 
         assert_cli_snapshot!("settings", @r###"
+        activate_aggressive = false
         all_compile = false
         always_keep_download = false
         always_keep_install = false

src/cli/settings/unset.rs

@@ -40,6 +40,7 @@ mod tests {
         assert_cli!("settings", "unset", "legacy_version_file");
 
         assert_cli_snapshot!("settings", @r###"
+        activate_aggressive = false
         all_compile = false
         always_keep_download = true
         always_keep_install = true

src/config/settings.rs

@@ -17,6 +17,9 @@ use crate::{env, file};
 #[config(partial_attr(derive(Clone, Serialize, Default)))]
 #[config(partial_attr(serde(deny_unknown_fields)))]
 pub struct Settings {
+    /// push tools to the front of PATH instead of allowing modifications of PATH after activation to take precedence
+    #[config(env = "MISE_ACTIVATE_AGGRESSIVE", default = false)]
+    pub activate_aggressive: bool,
     #[config(env = "MISE_ALL_COMPILE", default = false)]
     pub all_compile: bool,
     #[config(env = "MISE_ALWAYS_KEEP_DOWNLOAD", default = false)]