added env._.python.venv directive

e2e/test_python

@@ -7,12 +7,14 @@ export MISE_EXPERIMENTAL=1
 export MISE_PYTHON_DEFAULT_PACKAGES_FILE="$ROOT/e2e/.default-python-packages"
 
 cat >.e2e.mise.toml <<EOF
+[env._.python]
+venv = {path = "{{env.MISE_DATA_DIR}}/venv", create=true}
 [tools]
-python = {version = "{{exec(command='echo 3.12.0')}}", virtualenv="{{env.MISE_DATA_DIR}}/venv"}
+python = "{{exec(command='echo 3.12.0')}}"
 EOF
 
 mise i
-mise x -- python -m venv "$MISE_DATA_DIR/venv"
+#mise x -- python -m venv "$MISE_DATA_DIR/venv"
 assert_contains "mise x [email protected] -- python --version" "Python 3.12.0"
 assert_contains "mise env -s bash | grep VIRTUAL_ENV" "$MISE_DATA_DIR/venv"
 assert "mise x -- which python" "$MISE_DATA_DIR/venv/bin/python"

schema/mise.json

@@ -104,6 +104,33 @@
                   }
                 }
               ]
+            },
+            "python": {
+              "type": "object",
+              "description": "python environment",
+              "properties": {
+                "venv": {
+                  "oneOf": [
+                    {"description": "path to python virtual environment to use", "type": "string"},
+                    {
+                      "description": "virtualenv options",
+                      "type": "object",
+                      "required": ["path"],
+                      "properties": {
+                        "path": {
+                          "description": "path to python virtual environment to use",
+                          "type": "string"
+                        },
+                        "create": {
+                          "description": "create a new virtual environment if one does not exist",
+                          "type": "boolean",
+                          "default": false
+                        }
+                      }
+                    }
+                  ]
+                }
+              }
             }
           }
         }

src/cli/settings/ls.rs

@@ -85,7 +85,6 @@ mod tests {
         python_compile = false
         python_default_packages_file = "~/.default-python-packages"
         python_pyenv_repo = "https://github.com/pyenv/pyenv.git"
-        python_venv_auto_create = false
         quiet = false
         raw = false
         trusted_config_paths = []
@@ -129,7 +128,6 @@ mod tests {
         python_compile
         python_default_packages_file
         python_pyenv_repo
-        python_venv_auto_create
         quiet
         raw
         status

src/cli/settings/set.rs

@@ -150,7 +150,6 @@ pub mod tests {
         python_compile = false
         python_default_packages_file = "~/.default-python-packages"
         python_pyenv_repo = "https://github.com/pyenv/pyenv.git"
-        python_venv_auto_create = false
         quiet = false
         raw = false
         trusted_config_paths = []

src/cli/settings/unset.rs

@@ -67,7 +67,6 @@ mod tests {
         python_compile = false
         python_default_packages_file = "~/.default-python-packages"
         python_pyenv_repo = "https://github.com/pyenv/pyenv.git"
-        python_venv_auto_create = false
         quiet = false
         raw = false
         trusted_config_paths = []

src/config/config_file/mise_toml.rs

@@ -426,6 +426,18 @@ impl<'de> de::Deserialize<'de> for EnvList {
                 while let Some(key) = map.next_key::<String>()? {
                     match key.as_str() {
                         "_" | "mise" => {
+                            struct EnvDirectivePythonVenv {
+                                path: PathBuf,
+                                create: bool,
+                            }
+
+                            #[derive(Deserialize, Default)]
+                            #[serde(deny_unknown_fields)]
+                            struct EnvDirectivePython {
+                                #[serde(default)]
+                                venv: Option<EnvDirectivePythonVenv>,
+                            }
+
                             #[derive(Deserialize)]
                             #[serde(deny_unknown_fields)]
                             struct EnvDirectives {
@@ -435,7 +447,77 @@ impl<'de> de::Deserialize<'de> for EnvList {
                                 file: Vec<PathBuf>,
                                 #[serde(default, deserialize_with = "deserialize_arr")]
                                 source: Vec<PathBuf>,
+                                #[serde(default)]
+                                python: EnvDirectivePython,
+                            }
+
+                            impl<'de> de::Deserialize<'de> for EnvDirectivePythonVenv {
+                                fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+                                where
+                                    D: Deserializer<'de>,
+                                {
+                                    struct EnvDirectivePythonVenvVisitor;
+
+                                    impl<'de> Visitor<'de> for EnvDirectivePythonVenvVisitor {
+                                        type Value = EnvDirectivePythonVenv;
+                                        fn expecting(
+                                            &self,
+                                            formatter: &mut Formatter,
+                                        ) -> std::fmt::Result
+                                        {
+                                            formatter.write_str("python venv directive")
+                                        }
+
+                                        fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
+                                        where
+                                            E: de::Error,
+                                        {
+                                            Ok(EnvDirectivePythonVenv {
+                                                path: v.into(),
+                                                create: false,
+                                            })
+                                        }
+
+                                        fn visit_map<M>(
+                                            self,
+                                            mut map: M,
+                                        ) -> Result<Self::Value, M::Error>
+                                        where
+                                            M: de::MapAccess<'de>,
+                                        {
+                                            let mut path = None;
+                                            let mut create = false;
+                                            while let Some(key) = map.next_key::<String>()? {
+                                                match key.as_str() {
+                                                    "path" => {
+                                                        path = Some(map.next_value()?);
+                                                    }
+                                                    "create" => {
+                                                        create = map.next_value()?;
+                                                    }
+                                                    _ => {
+                                                        return Err(de::Error::unknown_field(
+                                                            &key,
+                                                            &["path", "create"],
+                                                        ));
+                                                    }
+                                                }
+                                            }
+                                            let path = path
+                                                .ok_or_else(|| de::Error::missing_field("path"))?;
+                                            Ok(EnvDirectivePythonVenv { path, create })
+                                        }
+                                    }
+
+                                    const FIELDS: &[&str] = &["path", "create"];
+                                    deserializer.deserialize_struct(
+                                        "PythonVenv",
+                                        FIELDS,
+                                        EnvDirectivePythonVenvVisitor,
+                                    )
+                                }
                             }
+
                             let directives = map.next_value::<EnvDirectives>()?;
                             // TODO: parse these in the order they're defined somehow
                             for path in directives.path {
@@ -447,6 +529,12 @@ impl<'de> de::Deserialize<'de> for EnvList {
                             for source in directives.source {
                                 env.push(EnvDirective::Source(source));
                             }
+                            if let Some(venv) = directives.python.venv {
+                                env.push(EnvDirective::PythonVenv {
+                                    path: venv.path,
+                                    create: venv.create,
+                                });
+                            }
                         }
                         _ => {
                             enum Val {

src/config/env_directive.rs

@@ -1,14 +1,18 @@
+use std::collections::{BTreeSet, HashMap};
+use std::fmt::Display;
+use std::path::{Path, PathBuf};
+
+use eyre::Context;
+use indexmap::IndexMap;
+
+use crate::cmd::CmdLineRunner;
 use crate::config::config_file::trust_check;
-use crate::config::Settings;
+use crate::config::{Config, Settings};
 use crate::env_diff::{EnvDiff, EnvDiffOperation};
 use crate::file::display_path;
 use crate::tera::{get_tera, BASE_CONTEXT};
+use crate::toolset::ToolsetBuilder;
 use crate::{dirs, env};
-use eyre::Context;
-use indexmap::IndexMap;
-use std::collections::{BTreeSet, HashMap};
-use std::fmt::Display;
-use std::path::{Path, PathBuf};
 
 #[derive(Debug, Clone)]
 pub enum EnvDirective {
@@ -22,6 +26,10 @@ pub enum EnvDirective {
     Path(PathBuf),
     /// run a bash script and apply the resulting env diff
     Source(PathBuf),
+    PythonVenv {
+        path: PathBuf,
+        create: bool,
+    },
 }
 
 impl From<(String, String)> for EnvDirective {
@@ -44,6 +52,13 @@ impl Display for EnvDirective {
             EnvDirective::File(path) => write!(f, "dotenv {}", display_path(path)),
             EnvDirective::Path(path) => write!(f, "path_add {}", display_path(path)),
             EnvDirective::Source(path) => write!(f, "source {}", display_path(path)),
+            EnvDirective::PythonVenv { path, create } => {
+                write!(f, "python venv path={}", display_path(path))?;
+                if *create {
+                    write!(f, " create")?;
+                }
+                Ok(())
+            }
         }
     }
 }
@@ -143,6 +158,53 @@ impl EnvResults {
                         }
                     }
                 }
+                EnvDirective::PythonVenv { path, create } => {
+                    trace!("python venv: {} create={create}", display_path(&path));
+                    trust_check(&source)?;
+                    let venv = r.parse_template(&ctx, &source, path.to_string_lossy().as_ref())?;
+                    let venv = normalize_path(venv.into());
+                    if !venv.exists() && create {
+                        // TODO: the toolset stuff doesn't feel like it's in the right place here
+                        let config = Config::get();
+                        let ts = ToolsetBuilder::new().build(&config)?;
+                        let path = ts
+                            .list_paths()
+                            .into_iter()
+                            .chain(env::split_paths(&env_vars["PATH"]))
+                            .collect::<Vec<_>>();
+                        let cmd = CmdLineRunner::new("python3")
+                            .args(["-m", "venv", &venv.to_string_lossy()])
+                            .envs(&env_vars)
+                            .env(
+                                "PATH",
+                                env::join_paths(&path)?.to_string_lossy().to_string(),
+                            );
+                        if ts
+                            .list_missing_versions()
+                            .iter()
+                            .any(|tv| tv.forge.name == "python")
+                        {
+                            debug!("python not installed, skipping venv creation");
+                        } else {
+                            info!("creating venv at: {}", display_path(&venv));
+                            cmd.execute()?;
+                        }
+                    }
+                    if venv.exists() {
+                        r.env_paths.push(venv.join("bin"));
+                        env.insert(
+                            "VIRTUAL_ENV".into(),
+                            (venv.to_string_lossy().to_string(), Some(source.clone())),
+                        );
+                    } else {
+                        warn!(
+                            "no venv found at: {p}\n\n\
+                            To create a virtualenv manually, run:\n\
+                            python -m venv {p}",
+                            p = display_path(&venv)
+                        );
+                    }
+                }
             };
         }
         for (k, (v, source)) in env {
@@ -173,9 +235,10 @@ impl EnvResults {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use crate::test::replace_path;
 
+    use super::*;
+
     #[test]
     fn test_env_path() {
         let mut env = HashMap::new();

src/config/settings.rs

@@ -102,8 +102,6 @@ pub struct Settings {
     pub python_precompiled_os: Option<String>,
     #[config(env = "MISE_PYENV_REPO", default = "https://github.com/pyenv/pyenv.git")]
     pub python_pyenv_repo: String,
-    #[config(env = "MISE_PYTHON_VENV_AUTO_CREATE", default = false)]
-    pub python_venv_auto_create: bool,
     #[config(env = "MISE_RAW", default = false)]
     pub raw: bool,
     #[config(env = "MISE_SHORTHANDS_FILE")]
@@ -135,6 +133,8 @@ pub struct Settings {
     pub trace: bool,
     #[config(env = "MISE_LOG_LEVEL", default = "info")]
     pub log_level: String,
+    #[config(env = "MISE_PYTHON_VENV_AUTO_CREATE", default = false)]
+    pub python_venv_auto_create: bool,
 }
 
 #[derive(Config, Default, Debug, Clone, Serialize)]
@@ -349,8 +349,18 @@ impl Settings {
     }
 
     pub fn hidden_configs() -> &'static HashSet<&'static str> {
-        static HIDDEN_CONFIGS: Lazy<HashSet<&'static str>> =
-            Lazy::new(|| ["ci", "cd", "debug", "env_file", "trace", "log_level"].into());
+        static HIDDEN_CONFIGS: Lazy<HashSet<&'static str>> = Lazy::new(|| {
+            [
+                "ci",
+                "cd",
+                "debug",
+                "env_file",
+                "trace",
+                "log_level",
+                "python_venv_auto_create",
+            ]
+            .into()
+        });
         &HIDDEN_CONFIGS
     }
 

src/plugins/core/python.rs

@@ -249,8 +249,6 @@ impl PythonPlugin {
                 } else {
                     warn!(
                         "no venv found at: {p}\n\n\
-                        To have mise automatically create virtualenvs, run:\n\
-                        mise settings set python_venv_auto_create true\n\n\
                         To create a virtualenv manually, run:\n\
                         python -m venv {p}",
                         p = display_path(&virtualenv)

tests/cli/install.rs

@@ -196,12 +196,12 @@ fn test_python() -> Result<()> {
 fn python_config_fixture() -> File {
     File {
         path: ".mise.toml".into(),
-        content: toml::toml!{
-            [settings]
-            python_venv_auto_create = true
+        content: toml::toml! {
+            [env]
+            "_".python.venv = {path="{{env.MISE_DATA_DIR}}/venv", create=true}
 
             [tools]
-            python = {version = "{{exec(command='echo 3.12.0')}}", virtualenv="{{env.MISE_DATA_DIR}}/venv"}
+            python = "{{exec(command='echo 3.12.0')}}"
         }.to_string(),
     }
 }