Mercurial: remove conditions for py3.5 + requirements only in setup.py

Pipfile

@@ -12,8 +12,6 @@ alabaster = "*"
 Sphinx = ">=1.4,!=1.5.4"
 alabaster_jupyterhub = "*"
 sphinxcontrib-autoprogram = "*"
-mercurial = {version = ">=5.2", markers="python_version > '3.5'"}
-hg-evolve = {version = ">=10.0", markers="python_version > '3.5'"}
 
 [packages]
 repo2docker = {path=".", editable=true}

dev-requirements.txt

@@ -6,5 +6,3 @@ wheel
 pytest-cov
 pre-commit
 requests
-mercurial>=5.2; python_version > '3.5'
-hg-evolve>=10.0; python_version > '3.5'

setup.py

@@ -55,8 +55,8 @@ setup(
         "ruamel.yaml>=0.15",
         "toml",
         "semver",
-        "mercurial>=5.2; python_version > '3.5'",
-        "hg-evolve>=10.0; python_version > '3.5'",
+        "mercurial>=5.2",
+        "hg-evolve>=10.0",
     ],
     python_requires=">=3.6",
     author="Project Jupyter Contributors",

tests/unit/contentproviders/test_mercurial.py

@@ -1,16 +1,12 @@
 from pathlib import Path
 import subprocess
 from tempfile import TemporaryDirectory
-import sys
 
 import pytest
 
 from repo2docker.contentproviders import Mercurial
 
 
-skipif_py35 = pytest.mark.skipif(sys.version_info < (3, 6), reason="requires python3.6")
-
-
 def _add_content_to_hg(repo_dir):
     """Add content to file 'test' in hg repository and commit."""
     # use append mode so this can be called multiple times
@@ -50,7 +46,6 @@ def hg_repo_with_content(hg_repo):
     yield hg_repo, node_id
 
 
-@skipif_py35
 def test_detect_mercurial(hg_repo_with_content, repo_with_content):
     mercurial = Mercurial()
     assert mercurial.detect("this-is-not-a-directory") is None
@@ -63,7 +58,6 @@ def test_detect_mercurial(hg_repo_with_content, repo_with_content):
     assert mercurial.detect(hg_repo) == {"repo": hg_repo, "ref": None}
 
 
-@skipif_py35
 def test_clone(hg_repo_with_content):
     """Test simple hg clone to a target dir"""
     upstream, node_id = hg_repo_with_content
@@ -78,7 +72,6 @@ def test_clone(hg_repo_with_content):
         assert mercurial.content_id == node_id
 
 
-@skipif_py35
 def test_bad_ref(hg_repo_with_content):
     """
     Test trying to checkout a ref that doesn't exist