How can I uninstall or reinstall PDM?

[lazarillo]

I updated my version of Python -- I use brew and expect / assume that I can update many packages and the links will update accordingly.

Now pdm is associated with a version that no longer exists. However, due to a deep nest of soft links and pointers that pdm has to multiple files representing Python, there is no easy way to just alter a line of code somewhere or redirect a soft link.

I would therefore like to uninstall pdm and reinstall it. (This time I will install via brew to ensure links are followed properly, despite the recommendation the the PDM documentation page not to do this.) There is no uninstall command, at least not that I can see. But since pdm is broken, a command like pdm uninstall would not help anyway.

I did a find command, and there is a giant mess of files created. The snippet below is just a very small portion of them:

./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/Code/User/workspaceStorage/9b36b749397a0ddb6f3f86c0fb94b440/redhat.java/jdt_ws/protobufs_8db2cab0/bin/pdm.lock
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/Code/User/workspaceStorage/9b36b749397a0ddb6f3f86c0fb94b440/redhat.java/jdt_ws/protobufs_8db2cab0/bin/.pdm.toml
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/bin/pdm
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm-1.9.0.dist-info
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm_pep517-0.8.3.dist-info
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.bash
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.fish
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.ps1
./System/Volumes/Data/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.zsh
./System/Volumes/Data/Users/mikewilliamson/Library/Python/3.9/bin/pdm
./System/Volumes/Data/Users/mikewilliamson/Library/Caches/com.apple.python/Users/mikewilliamson/Library/Application Support/pdm
./System/Volumes/Data/Users/mikewilliamson/Library/Caches/com.apple.python/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm
./System/Volumes/Data/Users/mikewilliamson/Library/Caches/pdm
./System/Volumes/Data/Users/mikewilliamson/.oh-my-zsh/custom/plugins/pdm
./System/Volumes/Data/Users/mikewilliamson/.oh-my-zsh/custom/plugins/pdm/_pdm
./Users/mikewilliamson/Library/Application Support/pdm
./Users/mikewilliamson/Library/Application Support/pdm/venv/bin/pdm
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm-1.9.0.dist-info
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm_pep517-0.8.3.dist-info
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.bash
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.fish
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.ps1
./Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm/cli/completions/pdm.zsh
./Users/mikewilliamson/Library/Python/3.9/bin/pdm
./Users/mikewilliamson/Library/Caches/com.apple.python/Users/mikewilliamson/Library/Application Support/pdm
./Users/mikewilliamson/Library/Caches/com.apple.python/Users/mikewilliamson/Library/Application Support/pdm/venv/lib/python3.9/site-packages/pdm
./Users/mikewilliamson/Library/Caches/pdm

There are truly hundreds more files, links, etc which are not to any packages I am managing with PDM, but just PDM itself. How can I uninstall and reinstall it?

[lazarillo]

Sorry, I figured it out. I can re-run the curl command that installs the script, but passing the --remove flag or setting the PDM_REMOVE env var.

[lazarillo]

This is in the documentation, I just missed it.

[frostming]

Just avoid using brew python to install tools like pdm. The way brew uses to manage Python version makes it a pain when Python gets upgraded.

From now on, you should not use brew python to install tools, if there are, re-install them. However, you can use the tool's homebrew version if is provided. brew install pdm and brew upgrade can upgrade it smoothly afterward.

[lazarillo]

Actually, I found I had the opposite problem: Brew install of PDM was better able to match the Python version I would want to use than the curl install of PDM.

I cannot remember the details now, but I specifically installed PDM first via curl, then uninstalled as described above so that I could install with brew. Since the new install via brew, I have had no problems.

[lazarillo]

This is not a complaint, by the way: I think that PDM is awesome, and I love using it now. I also recognize that brew does make links complicated. However, I think that brew has a fairly complete and robust linking system that captures edge cases well, and I'm not sure the install via curl is doing this as well.

Again, I am ignorant of the details, just saying that brew actually works quite well, IMHO.

[frostming]

I am not against brew install of PDM, it is listed as one of the recommendations. I am against installing tools using the pip shipped by a brew-installed Python. Note the difference?

[lazarillo]

Yes, I understand. Thanks! :)