Use pip-compile to manage python dependencies

Makes it easier to bump dependencies in the future, as one can simply
run `pip-compile --upgrade /path/to/requirement_file.in` to bump them.

This commit also bumps conan, which is required to make the CI green
again. The reason for this is to be
`Let's encrypt root authority server shutdown on September 30th`
See conan-io/conan#9695 for more information.
The latest conan version has the correct certificates.

continuous-integration/python-requirements/build.in

@@ -0,0 +1,4 @@
+scikit-build
+cmake
+ninja
+conan

continuous-integration/python-requirements/build.txt

@@ -1,4 +1,72 @@
-scikit-build==0.11.1
+#
+# This file is autogenerated by pip-compile with python 3.9
+# To update, run:
+#
+#    pip-compile continuous-integration/python-requirements/build.in
+#
+bottle==0.12.19
+    # via conan
+certifi==2021.5.30
+    # via requests
+charset-normalizer==2.0.6
+    # via requests
 cmake==3.18.4.post1
+    # via -r continuous-integration/python-requirements/build.in
+colorama==0.4.4
+    # via conan
+conan==1.40.3
+    # via -r continuous-integration/python-requirements/build.in
+distro==1.6.0
+    # via
+    #   conan
+    #   scikit-build
+fasteners==0.16.3
+    # via conan
+future==0.18.2
+    # via conan
+idna==3.2
+    # via requests
+jinja2==2.11.3
+    # via conan
+markupsafe==2.0.1
+    # via jinja2
 ninja==1.10.0.post2
-conan==1.35.2
+    # via -r continuous-integration/python-requirements/build.in
+node-semver==0.6.1
+    # via conan
+packaging==21.0
+    # via scikit-build
+patch-ng==1.17.4
+    # via conan
+pluginbase==1.0.1
+    # via conan
+pygments==2.10.0
+    # via conan
+pyjwt==1.7.1
+    # via conan
+pyparsing==2.4.7
+    # via packaging
+python-dateutil==2.8.2
+    # via conan
+pyyaml==5.4.1
+    # via conan
+requests==2.26.0
+    # via conan
+scikit-build==0.11.1
+    # via -r continuous-integration/python-requirements/build.in
+six==1.16.0
+    # via
+    #   conan
+    #   fasteners
+    #   python-dateutil
+tqdm==4.62.3
+    # via conan
+urllib3==1.26.7
+    # via
+    #   conan
+    #   requests
+wheel==0.37.0
+    # via scikit-build
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools

continuous-integration/python-requirements/lint.in

@@ -0,0 +1,6 @@
+black==19.10b0
+darglint==1.5.3
+flake8==3.8.3
+flake8-docstrings==1.5.0
+pylint==2.6.0
+scikit-build==0.11.1

continuous-integration/python-requirements/lint.txt

@@ -1,6 +1,67 @@
+#
+# This file is autogenerated by pip-compile with python 3.9
+# To update, run:
+#
+#    pip-compile continuous-integration/python-requirements/lint.in
+#
+appdirs==1.4.4
+    # via black
+astroid==2.5
+    # via pylint
+attrs==21.2.0
+    # via black
 black==19.10b0
+    # via -r continuous-integration/python-requirements/lint.in
+click==8.0.1
+    # via black
 darglint==1.5.3
+    # via -r continuous-integration/python-requirements/lint.in
+distro==1.6.0
+    # via scikit-build
 flake8==3.8.3
+    # via
+    #   -r continuous-integration/python-requirements/lint.in
+    #   flake8-docstrings
 flake8-docstrings==1.5.0
+    # via -r continuous-integration/python-requirements/lint.in
+isort==5.9.3
+    # via pylint
+lazy-object-proxy==1.6.0
+    # via astroid
+mccabe==0.6.1
+    # via
+    #   flake8
+    #   pylint
+packaging==21.0
+    # via scikit-build
+pathspec==0.9.0
+    # via black
+pycodestyle==2.6.0
+    # via flake8
+pydocstyle==6.1.1
+    # via flake8-docstrings
+pyflakes==2.2.0
+    # via flake8
 pylint==2.6.0
+    # via -r continuous-integration/python-requirements/lint.in
+pyparsing==2.4.7
+    # via packaging
+regex==2021.9.30
+    # via black
 scikit-build==0.11.1
+    # via -r continuous-integration/python-requirements/lint.in
+snowballstemmer==2.1.0
+    # via pydocstyle
+toml==0.10.2
+    # via
+    #   black
+    #   pylint
+typed-ast==1.4.3
+    # via black
+wheel==0.37.0
+    # via scikit-build
+wrapt==1.12.1
+    # via astroid
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools

continuous-integration/python-requirements/setup.in

@@ -0,0 +1 @@
+requests==2.24.0

continuous-integration/python-requirements/setup.txt

@@ -1 +1,16 @@
+#
+# This file is autogenerated by pip-compile with python 3.9
+# To update, run:
+#
+#    pip-compile continuous-integration/python-requirements/setup.in
+#
+certifi==2021.5.30
+    # via requests
+chardet==3.0.4
+    # via requests
+idna==2.10
+    # via requests
 requests==2.24.0
+    # via -r continuous-integration/python-requirements/setup.in
+urllib3==1.25.11
+    # via requests

continuous-integration/python-requirements/test.in

@@ -0,0 +1,5 @@
+pytest
+pytest-helpers-namespace
+pytest-pythonpath
+pytest-timeout
+requests

continuous-integration/python-requirements/test.txt

@@ -1,5 +1,44 @@
+#
+# This file is autogenerated by pip-compile with python 3.9
+# To update, run:
+#
+#    pip-compile continuous-integration/python-requirements/test.in
+#
+attrs==21.2.0
+    # via pytest
+certifi==2021.5.30
+    # via requests
+chardet==3.0.4
+    # via requests
+idna==2.10
+    # via requests
+iniconfig==1.1.1
+    # via pytest
+more-itertools==8.10.0
+    # via pytest
+packaging==21.0
+    # via pytest
+pluggy==0.13.1
+    # via pytest
+py==1.10.0
+    # via pytest
+pyparsing==2.4.7
+    # via packaging
 pytest==6.0.1
+    # via
+    #   -r continuous-integration/python-requirements/test.in
+    #   pytest-helpers-namespace
+    #   pytest-pythonpath
+    #   pytest-timeout
 pytest-helpers-namespace==2019.1.8
+    # via -r continuous-integration/python-requirements/test.in
 pytest-pythonpath==0.7.3
+    # via -r continuous-integration/python-requirements/test.in
 pytest-timeout==1.4.2
+    # via -r continuous-integration/python-requirements/test.in
 requests==2.24.0
+    # via -r continuous-integration/python-requirements/test.in
+toml==0.10.2
+    # via pytest
+urllib3==1.25.11
+    # via requests