add symlink support

Author: Chongkai Zhu

.gitignore

@@ -1,9 +1,8 @@
 testing/environments*/*
 build
 dist
-venv_pack.egg-info
+venv_pack2.egg-info
 .cache
 .coverage
-htmlcov/
 .pytest_cache/
 *.pyc

setup.py

@@ -1,7 +1,7 @@
 from setuptools import setup
 
 setup(name='venv-pack2',
-      version='0.5.0',
+      version='0.6.0',
       url='https://github.com/mrmathematica/venv-pack',
       project_urls={"Source Code": "https://github.com/mrmathematica/venv-pack"},
       maintainer='mrmathematica',

venv_pack/core.py

@@ -600,8 +600,10 @@ def _rewrite_shebang(data, target, prefix):
 
         if executable.startswith(prefix_b):
             # shebang points inside environment, rewrite
-            executable_name = os.path.basename(executable)
-            new_shebang = (b'#!%s' if on_win else b'#!/bin/sh\n"exec" "`dirname $0`/%s" "$0" "$@"\n') % executable_name
+            new_shebang = (b'#!%s'
+                           if on_win else
+                           b'#!/bin/sh\n"exec" "`dirname $(realpath $0)`/%s" "$0" "$@"\n')\
+                          % os.path.basename(executable)
             data = data.replace(shebang, new_shebang)
 
         return data, True, target