Remove python 3.7 and some cleanup (#144)

* Update macOS target to macOS 11

Changed MACOSX_DEPLOYMENT_TARGET to macOS 11

* Remove python 3.7

* update cibuildwheel to 2.14.1

* Update build.yml

* Set minimum OS and python versions

* Update build.yml

* Update build.yml

* Update build.yml

* Update build.yml

* Update build.yml

* Remove darwin section from setup.py

This darwin section was never used, and actually couldn't run as the class is only used on Windows

* Update setup.py

.github/workflows/build.yml

@@ -45,12 +45,6 @@ jobs:
             runs-on:
               intel: [windows-latest]
         python:
-          - major-dot-minor: '3.7'
-            cibw-build: 'cp37-*'
-            manylinux:
-              arch: manylinux2014
-              intel: manylinux2010
-            matrix: '3.7'
           - major-dot-minor: '3.8'
             cibw-build: 'cp38-*'
             manylinux:
@@ -132,7 +126,7 @@ jobs:
         CIBW_ARCHS_MACOS: ${{ matrix.os.cibw-archs-macos[matrix.arch.matrix] }}
         CIBW_PRERELEASE_PYTHONS: True
       run:
-        pipx run --spec='cibuildwheel==2.11.1' cibuildwheel --output-dir dist 2>&1
+        pipx run --spec='cibuildwheel==2.11.2' cibuildwheel --output-dir dist 2>&1
 
     - name: Upload artifacts
       uses: actions/upload-artifact@v3

setup.py

@@ -221,11 +221,6 @@ class BuildExt(build_ext):
         "unix": [""],
     }
 
-    if sys.platform == "darwin":
-        darwin_opts = ["-stdlib=libc++", "-mmacosx-version-min=10.14"]
-        c_opts["unix"] += darwin_opts
-        l_opts["unix"] += darwin_opts  # type: ignore
-
     def build_extensions(self):
         ct = self.compiler.compiler_type
         opts = self.c_opts.get(ct, [])
@@ -250,7 +245,7 @@ def build_extensions(self):
         author_email="[email protected]",
         description="Chia vdf verification (wraps C++)",
         license="Apache License",
-        python_requires=">=3.7",
+        python_requires=">=3.8",
         long_description=open("README.md").read(),
         long_description_content_type="text/markdown",
         url="https://github.com/Chia-Network/chiavdf",
@@ -268,7 +263,7 @@ def build_extensions(self):
         author_email="[email protected]",
         description="Chia vdf verification (wraps C++)",
         license="Apache License",
-        python_requires=">=3.7",
+        python_requires=">=3.8",
         long_description=open("README.md").read(),
         long_description_content_type="text/markdown",
         url="https://github.com/Chia-Network/chiavdf",