feat: added task_auto_install setting

schema/mise.json

@@ -642,6 +642,13 @@
           "description": "Path to the system mise config file. Default is `/etc/mise/config.toml`. This must be an env var.",
           "type": "string"
         },
+        "task_auto_install": {
+          "description": "Instead of auto-installing all tools on `mise run`, only install these tools. Set to '[]' to disable the behavior entirely.",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
         "task_disable_paths": {
           "default": [],
           "description": "Paths that mise will not look for tasks in.",

settings.toml

@@ -842,6 +842,14 @@ type = "Path"
 optional = true
 description = "Path to the system mise config file. Default is `/etc/mise/config.toml`. This must be an env var."
 
+[task_auto_install]
+env = "MISE_TASK_AUTO_INSTALL"
+type = "ListString"
+rust_type = "Vec<String>"
+parse_env = "list_by_comma"
+optional = true
+description = "Instead of auto-installing all tools on `mise run`, only install these tools. Set to '[]' to disable the behavior entirely."
+
 [task_disable_paths]
 env = "MISE_TASK_DISABLE_PATHS"
 type = "ListPath"
@@ -873,6 +881,7 @@ Change output style when executing tasks. This controls the output of `mise run`
 env = "MISE_TASK_RUN_AUTO_INSTALL"
 type = "Bool"
 default = true
+hide = true
 description = "Automatically install missing tools when executing tasks."
 
 [task_skip]

src/cli/exec.rs

@@ -71,6 +71,7 @@ impl Exec {
                 || !console::user_attended_stderr()
                 || *env::__MISE_SHIM,
             resolve_options: Default::default(),
+            ..Default::default()
         };
         measure!("install_arg_versions", {
             ts.install_missing_versions(&opts)?

src/cli/install.rs

@@ -80,6 +80,7 @@ impl Install {
                 use_locked_version: true,
                 latest_versions: true,
             },
+            ..Default::default()
         }
     }
 

src/cli/run.rs

@@ -191,6 +191,7 @@ impl Run {
 
         ts.install_missing_versions(&InstallOptions {
             missing_args_only: !SETTINGS.task_run_auto_install,
+            missing_tools_auto_install: SETTINGS.task_auto_install.clone(),
             ..Default::default()
         })?;
         let mut env = ts.env_with_path(&Config::get())?;

src/toolset/mod.rs

@@ -60,6 +60,7 @@ pub struct InstallOptions {
     pub raw: bool,
     /// only install missing tools if passed as arguments
     pub missing_args_only: bool,
+    pub missing_tools_auto_install: Option<Vec<String>>,
     pub resolve_options: ResolveOptions,
 }
 
@@ -70,6 +71,7 @@ impl Default for InstallOptions {
             raw: SETTINGS.raw,
             force: false,
             missing_args_only: true,
+            missing_tools_auto_install: None,
             resolve_options: Default::default(),
         }
     }
@@ -143,6 +145,13 @@ impl Toolset {
                 !opts.missing_args_only
                     || matches!(self.versions[tv.ba()].source, ToolSource::Argument)
             })
+            .filter(|tv| {
+                if let Some(missing_tools_auto_install) = &opts.missing_tools_auto_install {
+                    missing_tools_auto_install.contains(&tv.ba().short)
+                } else {
+                    true
+                }
+            })
             .map(|tv| tv.request)
             .collect_vec();
         let versions = self.install_all_versions(versions, &mpr, opts)?;