Revert "Add pyproject.toml file (#11305)"

This reverts commit 882a70d.

datadog_checks_downloader/requirements.in

@@ -0,0 +1,13 @@
+#
+# At the time of writing (Jan 30 2020), this was the latest version of these
+# libraries.
+#
+tuf==0.17.0; python_version < "3.0"
+tuf==0.19.0; python_version > "3.0"
+in-toto==1.0.1
+#
+# Make sure TUF and in-toto use the same version of this library, which they
+# both use in common. At the time of writing (Jan 30 2020), this was the latest
+# version of the library.
+#
+securesystemslib[crypto,pynacl]==0.20.1

datadog_checks_downloader/setup.py

@@ -27,21 +27,6 @@ def get_dependencies():
         return f.readlines()
 
 
-def parse_pyproject_array(name):
-    import os
-    import re
-    from ast import literal_eval
-
-    pattern = r'^{} = (\[.+?\])$'.format(name)
-
-    with open(os.path.join(HERE, 'pyproject.toml'), 'r', encoding='utf-8') as f:
-        # Windows \r\n prevents match
-        contents = '\n'.join(line.rstrip() for line in f.readlines())
-
-    array = re.search(pattern, contents, flags=re.MULTILINE | re.DOTALL).group(1)
-    return literal_eval(array)
-
-
 setup(
     # Version should always match one from an agent release
     version=ABOUT["__version__"],
@@ -67,7 +52,7 @@ def parse_pyproject_array(name):
     ],
     packages=['datadog_checks.downloader'],
     # Run-time dependencies
-    extras_require={'deps': parse_pyproject_array('deps')},
+    extras_require={'deps': get_dependencies()},
     # NOTE: Copy over TUF directories, and root metadata.
     package_data={
         'datadog_checks.downloader': [

datadog_checks_downloader/tox.ini

@@ -11,9 +11,9 @@ envdir =
     py38: {toxworkdir}/py38
 dd_check_style = true
 usedevelop = true
-extras = deps
 deps =
   -e../datadog_checks_base[deps]
   -rrequirements-dev.txt
 commands =
+  pip install -r requirements.in
   pytest -v {posargs} --capture=no --log-cli-level=debug