fix: use the system package manager instead of pip for standard modules

Author: aminya

dist/actions/setup-cpp.js

@@ -47,6 +47,7 @@ async function setupPipx(foundPython: string) {
       await setupPipPackWithPython(foundPython, "pipx", undefined, { upgrade: true, usePipx: false })
     }
     await execa(foundPython, ["-m", "pipx", "ensurepath"], { stdio: "inherit" })
+    await setupPipPackWithPython(foundPython, "venv", undefined, { upgrade: false, usePipx: false })
   } catch (err) {
     warning(`Failed to install pipx: ${(err as Error).toString()}. Ignoring...`)
   }

dist/actions/setup-cpp.js.map

@@ -54,9 +54,16 @@ export async function setupPipPackWithPython(
     const upgradeFlag = upgrade ? (isPipx ? ["upgrade"] : ["install", "--upgrade"]) : ["install"]
     const userFlag = !isPipx && user ? ["--user"] : []
 
-    execaSync(givenPython, ["-m", pip, ...upgradeFlag, ...userFlag, nameAndVersion], {
-      stdio: "inherit",
-    })
+    const hasPackage = await pipHasPackage(givenPython, name)
+    if (hasPackage) {
+      execaSync(givenPython, ["-m", pip, ...upgradeFlag, ...userFlag, nameAndVersion], {
+        stdio: "inherit",
+      })
+    } else {
+      if ((await setupPipPackSystem(name)) === null) {
+        throw new Error(`Failed to install ${name}.`)
+      }
+    }
   } catch (err) {
     info(`Failed to install ${name} via ${pip}: ${err}.`)
     if ((await setupPipPackSystem(name)) === null) {
@@ -85,6 +92,11 @@ async function getPython_raw(): Promise<string> {
 }
 const getPython = memoize(getPython_raw)
 
+async function pipHasPackage(python: string, name: string) {
+  const result = await execa(python, ["-m", "pip", "show", name], { stdio: "ignore", reject: false })
+  return result.exitCode === 0
+}
+
 async function findBinDir(dirs: string[], name: string) {
   const exists = await Promise.all(dirs.map((dir) => pathExists(join(dir, addExeExt(name)))))
   const dirIndex = exists.findIndex((exist) => exist)