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Patch activate script to set VIRTUAL_ENV correctly.

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Patch a virtualenv's activate script to not resolve symlinks when
setting the environment variable VIRTUAL_ENV.

Fixes #1190.
This commit is contained in:
Eklavya Sharma
2016-07-20 19:04:31 +05:30
committed by Tim Abbott
parent c59740385d
commit e7813094d7
1 changed files with 16 additions and 0 deletions
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16
scripts/lib/setup_venv.py
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@@ -34,6 +34,21 @@ VENV_DEPENDENCIES = [
"libpq-dev", # Needed by psycopg2
]
def patch_activate_script(venv_path):
# venv_path should be what we want to have in VIRTUAL_ENV after patching
script_path = os.path.join(venv_path, "bin", "activate")
file_obj = open(script_path)
lines = file_obj.readlines()
for i, line in enumerate(lines):
if line.startswith('VIRTUAL_ENV='):
lines[i] = 'VIRTUAL_ENV="%s"\n' % (venv_path,)
file_obj.close()
file_obj = open(script_path, 'w')
file_obj.write("".join(lines))
file_obj.close()
def setup_virtualenv(target_venv_path, requirements_file, virtualenv_args=None):
# type: (Optional[str], str, Optional[List[str]]) -> str
@@ -53,6 +68,7 @@ def setup_virtualenv(target_venv_path, requirements_file, virtualenv_args=None):
print("Using cached Python venv from %s" % (cached_venv_path,))
if target_venv_path is not None:
run(["sudo", "ln", "-nsf", cached_venv_path, target_venv_path])
patch_activate_script(target_venv_path)
activate_this = os.path.join(cached_venv_path, "bin", "activate_this.py")
exec(open(activate_this).read(), {}, dict(__file__=activate_this)) # type: ignore # https://github.com/python/mypy/issues/1577
return cached_venv_path