[mofeing]

Well, we first named it "pypi-cache" but there is a package named "pypicache" from the year 2007 and we had to rename it. We always thought of it as a "cache" rather than a "mirror"... but yes, "mirror" is more appropriate. Btw we released it just 1 week ago which is also maybe why you did not find it.

1. Well, the flag "--index-url" explicitly says that "... should point to a repository compliant with PEP 503 (the simple repository API) or a local directory laid out in the same format". PEP 503 defines the directory structure where there is a folder per package, an "index.html" on the root with a link to each package and *an "index.html" in each package folder that has a link per available file*.

URLs are not limited to "https", they can also be relative paths. So the trick we do is to download the file to the folder of the package and add an anchor to that file in the "index.html" of the package. For example,

If you go to https://pypi.org/simple/numpy, you will find links like the following: <a href="https://files.pythonhosted.org/packages/f6/d8/ab692a75f584d1..." data-requires-python=">=3.8">numpy-1.22.4.zip</a>

But we download it and write, <a href="./numpy-1.22.4.zip" data-requires-python=">=3.8">numpy-1.22.4.zip</a>

This is specially important for us because we cannot setup any kind of server.

2. Okay nice. Yep, we thought that parsing would be more difficult and that relying on parsing would be problematic due to the different build-systems and that many packages still do not have the "pyproject.toml" file. We opted for a manual approach in which you do "pypickup add" until you have no more "dependency missing" errors. Your approach looks much better to me, but like you said is limited to "pyproject.toml" and "setuptools" right now.

Btw, does it also downloads extra dependencies?

3. Nice. I also stopped using Poetry for things like that, but now I manually write my "pyproject.toml" with "setuptools".

I like the idea on trying to parse the dependencies. I will probably try something but since we download all files (filtering some of them), it would be more costly. Maybe in some weeks when I'm more free.

[idop]

Ahh, I get it, it needs index.html files. I can easily implement this, but I actually did want the server because I wanted it to be easily accessible from multiple machines, I also wanted to implement the JSON API, and also want (in an upcoming version) to allow uploading private packages to the mirror.

As for extra dependencies, yes, they will be mirrored, but only if relevant, i.e. if they are included in a requirement string (be it a direct requirement or a dependency of a dependency).

[mofeing]

Ahh ok. In our case all the machine have a shared network filesystem where we store the mirror.

Great about the extras.

Would you mind if we reference each other in the readmes?