tox: include coverage on path job

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

tox.ini

@@ -47,9 +47,8 @@ commands =
 description = verify build can run from source (bootstrap)
 setenv =
     PYTHONPATH = {toxinidir}/src
-commands =
+commands_pre =
     python -E -m pip uninstall -y build colorama
-    pytest -ra {posargs:-n auto}
 
 [testenv:type]
 description = run type check on code base
@@ -102,7 +101,7 @@ commands =
     coverage xml -o {toxworkdir}/coverage.xml -i
     coverage html -d {toxworkdir}/htmlcov -i
     python -m diff_cover.diff_cover_tool --compare-branch {env:DIFF_AGAINST:origin/main} {toxworkdir}/coverage.xml
-depends = {py311, py310, py39, py38, py37, py36, pypy37, pypy38, pypy39}
+depends = {py311, py310, py39, py38, py37, py36, pypy37, pypy38, pypy39, path}
 
 [flake8]
 max-line-length = 127