Fix pip install error

[RogerQi]

pip install . is throwing errors on my machine because it's not finding requested packages. Using relative import fixes this issue.

Tested on three different machines with both pip install . and pip install pip install git+https://github.com/RogerQi/pydensecrf.git

[lucasb-eyer]

Thanks. Since I don't have the time to test it myself, if there's >2 thumbs up, I'll just hit merge :)

[jokester]

I'm not a py guru but this PR helped me to install in my linux PC. I'm using conda-provided Python 3.10 .

#requirements.txt
pydensecrf@git+https://github.com/RogerQi/pydensecrf.git

❯ venv/bin/pip install -r requirements.txt
Collecting pydensecrf@ git+https://github.com/RogerQi/pydensecrf.git
  Cloning https://github.com/RogerQi/pydensecrf.git to /tmp/pip-install-zgj1071_/pydensecrf_ad61512bf48b474a8f23121b4b25cea3
  Running command git clone --filter=blob:none --quiet https://github.com/RogerQi/pydensecrf.git /tmp/pip-install-zgj1071_/pydensecrf_ad61512bf48b474a8f
23121b4b25cea3
  Resolved https://github.com/RogerQi/pydensecrf.git to commit c8908960dac50093ea8a11ae2eb64445c04f8a0d
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done

.......

Building wheels for collected packages: pydensecrf
  Building wheel for pydensecrf (pyproject.toml) ... done
  Created wheel for pydensecrf: filename=pydensecrf-1.0rc2-cp310-cp310-linux_x86_64.whl size=300000 sha256=bbf09911dc3b5443e15ec5e183544af2b305ea48cb081ee6b6e93c2a501e67eb
  Stored in directory: /tmp/pip-ephem-wheel-cache-zv5dkgai/wheels/eb/c6/d1/85a07ad498f5560f3813578db0f50774a12233be2bbe241a52
Successfully built pydensecrf
Installing collected packages: pydensecrf
Successfully installed pydensecrf-1.0rc2
...

---

With the version in pypi, my build error was:

$ venv/bin/pip install pydensecrf

Collecting pydensecrf
  Downloading pydensecrf-1.0rc3.tar.gz (1.0 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.0/1.0 MB 11.0 MB/s eta 0:00:00
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [305 lines of output]
      /home/mono/moeflow/manga-image-translator/venv/lib/python3.10/site-packages/Cython/Compiler/Main.py:381: FutureWarning: Cython directive 'language
_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/pip-install-28xn5cpa/pydensecrf_41ba00d5dd4c489ca1678722
eb17cbbb/pydensecrf/densecrf.pxd
        tree = Parsing.p_module(s, pxd, full_module_name)
     
      Error compiling Cython file:
      ------------------------------------------------------------
      ...
      from eigen cimport *
      ^
      ------------------------------------------------------------
     
      pydensecrf/densecrf.pxd:1:0: 'eigen.pxd' not found
     
      Error compiling Cython file:
...

[jokester]

@lucasb-eyer dear owner I think the thumbs are enough now 🙏🏽

[lucasb-eyer]

Indeed, thanks for the ping!