cosmofy 0.2.0 #

Now using uv!

cosmofy 0.2.0 is available. So many things came together for this release:

Three open source developers I follow (William McGuan, Simon Willison, and Charlie Marsh) were all in a twitter thread where the concept of something like cosmofy was mentioned.
I learned how to make CLIs sort of work the way Astral's tools do.
I learned just how many crazy options GNU ls supports.

If you have uv installed you can use cosmofy:

uvx cosmofy

# or install it
uv tool install cosmofy

Release Notes 0.2.0 - 2025-12-24T03:14:02Z #

This release represents a very large shift from bundling individual python files to using uv to bundle entire venv directories. The behavior of the CLI is now much more similar to uv in form and function.

Fixed

#14 typo in --help
#43 exclude uv artifacts from the bundle
#46 expand_globs to follow all (most?) of the shell rules
#48 getting only the project's console_scripts
#50 cosmofy bundle --script assumes venv in output
#52 avoiding clobbering logging on import
#56 used context handlers to close temporary directories
#58 self update on Windows
#59 assumption that Last-Modified will be present in headers
#61 replaced PathDistribution._path with appropriate fallbacks
#62 replaced assert for validation with actual raise on error
#66 needless pass in parsing args
#67 command names in logging
#70 incorrect shebang in bundle.py
#71 used context handlers to close ZipFile objects
#72 download progress indicator shouldn't divide by zero
#73 missing newline in bundle.py error message
#75 explicit return of default when we can't get the version from a file
#77 cosmofy fs cat usage string
#79 ZipFile2.now should not be at module-level
#92 use public API for SourceFileLoader

Changed

#16 update examples, readme, usage (HT @Pugio)
#28 replaced --debug with --quiet + --verbose
#29 DEFAULT_PYTHON_URL is now Cosmopolitan Python
#31 replaced --cache with --no-cache + --cache-dir
#33 refactored bundler.py into subcommands
#55 switched to JSON parsing uv version output
#57 switched to using os.replace for atomic file moves
#64 replaced removeprefix with better cross-platform approach
#79 moved progress indicator to stderr
#87 marked cosmofy updater commands as experimental

Added

#18 progress when downloading (HT @Pugio)
#32 cosmofy bundle --script
#33 cosmofy bundle
#33 cosmofy fs add
#33 cosmofy fs args
#33 cosmofy updater remove
#33 dry run banner
#35 cosmofy fs ls
#36 cosmofy fs cat
#37 cosmofy fs rm
#38 cosmofy fs add -f to overwrite files that exist
#39 --color global option
#40 cosmofy self update
#40 cosmofy self version
#49 --exact to uv sync for better exact specs
#60 timeouts to network calls
#81 note that concurrent removals are not supported
#83 missing docstrings
#86 log message that only GitHub URLs are inferred
#89 warning when adding absolute paths
#91 note about handling weird file names

Removed

#15 cosmo.yaml workflow; added gh command
#17 default .com extension
#24 support for python <= 3.9
#27 --clone is no longer supported
#30 --download is no longer supported

Security

#53 added validate_url to avoid non-HTTPS URLs
#53 added security considerations note
#54 removed shell=True in places that don't need it
#63 added sanitize_zip_path to avoid bad entry names

2025-12-24 # release, cosmofy, LTS, uv, William McGuan, Simon Willison, Charlie Marsh