requirements: re-add cython build.txt

radhermit · radhermit · commit ab06dddb865e · 2021-03-12T22:56:12.000-07:00
Since the pyproject.toml release version doesn't require it but it's
needed to build release files.
diff --git a/requirements/build.txt b/requirements/build.txt
@@ -0,0 +1 @@
+cython>=0.21
diff --git a/requirements/dist.txt b/requirements/dist.txt
@@ -1,4 +1,5 @@
 # deps for building sdist/wheels for pypi
+-r build.txt
 -r install.txt
 -r docs.txt
 wheel
diff --git a/requirements/docs.txt b/requirements/docs.txt
@@ -1,3 +1,4 @@
+-r build.txt
 -r install.txt
 
 sphinx
