pkg(python-3.9.1): adjust for new layout

packages/python/3.9.1/build.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+PREFIX=$(realpath $(dirname $0))
+
+mkdir -p build
+
+cd build
+
+curl "https://www.python.org/ftp/python/3.9.1/Python-3.9.1.tgz" -o python.tar.gz
+tar xzf python.tar.gz --strip-components=1
+rm python.tar.gz
+
+./configure --prefix "$PREFIX" --with-ensurepip=install
+make -j$(nproc)
+make install -j$(nproc)
+
+cd ..
+
+rm -rf build 
+

packages/python/3.9.1/environment

@@ -0,0 +1 @@
+export PATH=$PWD/bin:$PATH

packages/python/3.9.1/metadata.json

@@ -0,0 +1,6 @@
+{
+    "language": "python",
+    "version": "3.9.1",
+    "author": "Thomas Hobson <thomas@hexf.me>",
+    "aliases": ["py", "python3"]
+}

packages/python/3.9.1/run

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+python3.9 $*

packages/python/3.9.1/test.py

@@ -0,0 +1 @@
+print("OK")