Dynamically include numpy headers (#429)

* Dynamically include numpy headers

* Add `pyproject.toml` and `build-constraints.txt` with numpy version
pins for building wheels with `pip` and `wheelwright`
* Update `setup.py` to add current numpy include directory
* Assume `cython` and `numpy` are installed for `setup.py`
* Remove included numpy headers

* Use --only-binary in CI

* Fix preshed pins

* Use --only-binary for package install

* Remove blis from pyproject.toml

* Fix preshed pins in pyproject.toml

* Revert "Remove blis from pyproject.toml"

This reverts commit 8f52c14.

.gitignore

@@ -1,4 +1,6 @@
 build/
+dist/
+*.egg-info/
 .env/
 .~env/
 .python/

MANIFEST.in

@@ -1,5 +1,4 @@
 global-include *.h *.S *.c *.cu
-recursive-include include *.cpp
 include buildbot.json
 include LICENSE
 include README.rst

azure-pipelines.yml

@@ -71,11 +71,12 @@ jobs:
       architecture: 'x64'
 
   - script: |
-      python -m pip install --upgrade pip
+      python -m pip install --upgrade pip setuptools
       pip install -r requirements.txt --prefer-binary
     displayName: 'Install dependencies'
 
-  - script: pip install -e .
+  - script: |
+      pip install -e . --only-binary :all:
     displayName: 'Install'
 
   - script: python -m pytest thinc

build-constraints.txt

@@ -0,0 +1,5 @@
+# build version constraints for use with wheelwright + multibuild
+numpy==1.15.0; python_version<='3.7'
+numpy==1.17.3; python_version=='3.8'
+numpy==1.19.3; python_version=='3.9'
+numpy; python_version>='3.10'