Remove pytest from install_requires (#57)

* remove pytest from requirements.txt

* Add dev_tools/pip-list

Co-authored-by: Nicholas Rubin <rubinnc0@gmail.com>

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ on: [pull_request]
 
 jobs:
   pytest:
-    name: Pytest Ubuntu
+    name: Pytest Ubuntu python3.6
     runs-on: ubuntu-16.04
     steps:
       - uses: actions/checkout@v1
@@ -29,13 +29,12 @@ jobs:
           architecture: 'x64'
       - name: Install requirements
         run: |
-          pip install -r requirements.txt
+          pip install -r ./dev_tools/pip-list
       - name: Pytest check
         run: |
-          pip install pytest
           pytest
   pytest37:
-    name: Pytest Ubuntu
+    name: Pytest Ubuntu python3.7
     runs-on: ubuntu-16.04
     steps:
       - uses: actions/checkout@v1
@@ -45,8 +44,7 @@ jobs:
           architecture: 'x64'
       - name: Install requirements
         run: |
-          pip install -r requirements.txt
+          pip install -r ./dev_tools/pip-list
       - name: Pytest check
         run: |
-          pip install pytest
           pytest

dev_tools/pip-list

@@ -0,0 +1,3 @@
+pytest~=6.2.1
+pyscf~=1.7.5.1
+openfermion~=1.0.0

requirements.txt

@@ -1,3 +1,2 @@
 openfermion>=1.0
 pyscf
-pytest