fix(python): reduce network usage for python precompiled manifests

src/plugins/core/python.rs

@@ -10,9 +10,10 @@ use crate::http::{HTTP, HTTP_FETCH};
 use crate::install_context::InstallContext;
 use crate::toolset::{ToolRequest, ToolVersion, Toolset};
 use crate::ui::progress_report::SingleReport;
-use crate::{cmd, file, plugins};
+use crate::{cmd, dirs, file, plugins};
 use eyre::{bail, eyre};
 use itertools::Itertools;
+use once_cell::sync::Lazy;
 use std::collections::BTreeMap;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, OnceLock};
@@ -22,21 +23,12 @@ use xx::regex;
 #[derive(Debug)]
 pub struct PythonPlugin {
     ba: BackendArg,
-    precompiled_cache: CacheManager<Vec<(String, String, String)>>,
 }
 
 impl PythonPlugin {
     pub fn new() -> Self {
         let ba = plugins::core::new_backend_arg("python");
-        Self {
-            precompiled_cache: CacheManagerBuilder::new(
-                ba.cache_path.join("precompiled.msgpack.z"),
-            )
-            .with_fresh_duration(SETTINGS.fetch_remote_versions_cache())
-            .with_cache_key(python_precompiled_platform())
-            .build(),
-            ba,
-        }
+        Self { ba }
     }
 
     fn python_build_path(&self) -> PathBuf {
@@ -87,11 +79,21 @@ impl PythonPlugin {
     }
 
     fn fetch_precompiled_remote_versions(&self) -> eyre::Result<&Vec<(String, String, String)>> {
-        self.precompiled_cache.get_or_try_init(|| {
+        static PRECOMPILED_CACHE: Lazy<CacheManager<Vec<(String, String, String)>>> =
+            Lazy::new(|| {
+                CacheManagerBuilder::new(dirs::CACHE.join("python").join("precompiled.msgpack.z"))
+                    .with_fresh_duration(SETTINGS.fetch_remote_versions_cache())
+                    .with_cache_key(python_precompiled_platform())
+                    .build()
+            });
+        PRECOMPILED_CACHE.get_or_try_init(|| {
+            let arch = python_arch();
+            let os = python_os();
+            let url_path = format!("python-precompiled-{arch}-{os}");
             let raw = match SETTINGS.paranoid {
-                true => HTTP_FETCH.get_text("https://mise-versions.jdx.dev/python-precompiled"),
+                true => HTTP_FETCH.get_text(format!("https://mise-versions.jdx.dev/{url_path}")),
                 // using http is not a security concern and enabling tls makes mise significantly slower
-                false => HTTP_FETCH.get_text("http://mise-versions.jdx.dev/python-precompiled"),
+                false => HTTP_FETCH.get_text(format!("http://mise-versions.jdx.dev/{url_path}")),
             }?;
             let platform = python_precompiled_platform();
             // order by version, whether it is a release candidate, date, and in the preferred order of install types