build/install problems

[jmdyck]

I'm trying to follow the instructions for "installing from a source tarball".

I cloned the Rust regex repo, put it in a dir named 'rust-regex', and built it okay. I cloned this repo, put it in a sibling dir. So when it says:

RURE_DIR=/path/to/regex/regex-capi python setup.py bdist_wheel

I did this:

RURE_DIR=../rust-regex/regex-capi python3 setup.py bdist_wheel

and it died with this:

running build_rust
error: [Errno 2] No such file or directory: '../rust-regex/regex-capi/target/release'

Now, it's not clear what RURE_DIR is supposed to mean, but I noticed that there's a target dir in the rust-regex dir itself. So I changed my command to:

RURE_DIR=../rust-regex python3 setup.py bdist_wheel

and it seemed to work. So is that a mistake in the README?

---

Then, when I do this:

pip3 install rure --no-index -f ./dist

I get either

Could not find a version that satisfies the requirement six (from rure) (from versions: )

or

Could not find a version that satisfies the requirement cffi>=1.5.0 (from rure) (from versions: )

I don't know what's going on.

[BurntSushi]

At some point, the regex crate moved to Cargo workspaces. One consequence of that is the consolidation to a single target directory in the root of the repo, no matter which crate is built. Before this change, regex-capi used to contain its own target directory.

[jmdyck]

Okay, so it sounds like my change to RURE_DIR was correct.

Any idea what's causing the pip3 failures?

[BurntSushi]

No. I don't maintain this project. I maintain the regex library. Sounds like you'll need to futz with the dependency requires on the Python side.

[jmdyck]

I maintain the regex library.

rust-lang/regex? Cool. RegexSet looks particularly useful for me, and I haven't seen anything like it elsewhere.

Sounds like you'll need to futz with the dependency requires on the Python side.

Yeah. I installed python3-cffi, and that seemed to make pip3's cffi complaint go away. But it was still complaining about six, despite the fact that I've got both python-six and python3-six installed. So I tried just adding --no-deps to the pip3 command, and it seems to have worked! (Shrug.)

[davidblewett]

@jmdyck I merged #17; thanks for that. Will look at your other issues.

[davidblewett]

@jmdyck what version of Python is this? Is it PyPy or cPython?

[jmdyck]

cPython 3.6.5

[davidblewett]

I swear this was working; I'm hitting other issues building now however. I'm going to try to implement https://github.com/davidblewett/rure-python/issues/14 ; it should address these in a more general way. The Python+Rust landscape has improved a bit since this package was started.