def app_is_installed(fn):
"""
Return the list of prefix directories in which `fn` in installed into,
which might be an empty list.
"""
prefixes = [config.root_dir]
for fn2 in os.listdir(config.envs_dir):
prefix = join(config.envs_dir, fn2)
if isdir(prefix):
prefixes.append(prefix)
dist = fn[:-8]
return [prefix for prefix in prefixes if install.is_linked(prefix, dist)]
def ensure_linked_actions(dists, prefix):
actions = defaultdict(list)
actions[PREFIX] = prefix
for dist in dists:
if install.is_linked(prefix, dist):
continue
actions[LINK].append(dist)
if install.is_extracted(config.pkgs_dir, dist):
continue
actions[EXTRACT].append(dist)
if install.is_fetched(config.pkgs_dir, dist):
continue
actions[FETCH].append(dist)
return actions
def launch(fn, prefix=config.root_dir, additional_args=None):
info = install.is_linked(prefix, fn[:-8])
if info is None:
return None
# prepend the bin directory to the path
fmt = r'%s\Scripts;%s' if sys.platform == 'win32' else '%s/bin:%s'
env = {'PATH': fmt % (abspath(prefix), os.getenv('PATH'))}
# copy existing environment variables, but not anything with PATH in it
for k, v in os.environ.iteritems():
if 'PATH' not in k:
env[k] = v
# allow updating environment variables from metadata
if 'app_env' in info:
env.update(info['app_env'])
# call the entry command
args = info['app_entry'].split()
cwd = abspath(expanduser('~'))
if additional_args:
args.extend(additional_args)
return subprocess.Popen(args, cwd=cwd , env=env)
def install_local_packages(prefix, paths, verbose=False):
# copy packages to pkgs dir
dists = []
for src_path in paths:
assert src_path.endswith('.tar.bz2')
fn = basename(src_path)
dists.append(fn[:-8])
dst_path = join(config.pkgs_dir, fn)
if abspath(src_path) == abspath(dst_path):
continue
shutil.copyfile(src_path, dst_path)
actions = defaultdict(list)
actions['PREFIX'] = prefix
actions['op_order'] = RM_EXTRACTED, EXTRACT, UNLINK, LINK
for dist in dists:
actions[RM_EXTRACTED].append(dist)
actions[EXTRACT].append(dist)
if install.is_linked(prefix, dist):
actions[UNLINK].append(dist)
actions[LINK].append(dist)
execute_actions(actions, verbose=verbose)
