Skip to content

Instantly share code, notes, and snippets.

What would you like to do?
Find the full import chain from one go package to another
#!/usr/bin/env python3
Find the full import chain from one go package to another.
Usage: source_package target_package
This is useful in large codebases to figure out why, for example, the testing package is
included in a resulting binary.
import collections
import subprocess
import sys
import functools
def list_imports(package):
if package == 'C':
return ()
out = subprocess.check_output(['go', 'list', '-f', '{{range .Imports}}{{.}} {{end}}', package])
imports = out.decode('utf-8').split()
return tuple(filter(lambda x: x != '', imports))
nomatch = {}
def find_import_chain(start, end):
if start in nomatch:
return None
print("Searching for %s%s..." % (start, end), file=sys.stderr)
if start == end:
return collections.deque([start])
imports = list_imports(start)
for x in imports:
chain = find_import_chain(x, end)
if chain is not None:
return chain
nomatch[start] = True
def main():
chain = find_import_chain(sys.argv[1], sys.argv[2])
if chain is not None:
if __name__ == "__main__":
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.