Install psycopg2 based on platform

.changes/unreleased/Fixes-20240412-153154.yaml

@@ -0,0 +1,6 @@
+kind: Fixes
+body: Determine `psycopg2` based on `platform_system` (Linux or other)
+time: 2024-04-12T15:31:54.861201-04:00
+custom:
+  Author: mikealfare
+  Issue: "60"

.github/workflows/integration-tests.yml

@@ -39,6 +39,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ contains(github.event_name, 'pull_request') && github.event.pull_request.head.ref || github.sha }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   integration:
     name: Integration Tests
@@ -68,14 +72,12 @@ jobs:
 
       - name: Update Adapters and Core branches
         if: ${{ github.event_name == 'workflow_call' || github.event_name == 'workflow_dispatch'}}
-        shell: bash
         run: |
           ./.github/scripts/update_dev_packages.sh \
             ${{ inputs.dbt_adapters_branch }} \
             ${{ inputs.core_branch }}
 
       - name: Setup postgres
-        shell: bash
         run: psql -f ./scripts/setup_test_database.sql
         env:
           PGHOST: localhost
@@ -106,3 +108,27 @@ jobs:
           source-file: "results.csv"
           file-name: "integration_results"
           python-version: ${{ matrix.python-version }}
+
+  psycopg2-check:
+    name: "Test psycopg2 build version"
+    runs-on: ${{ matrix.scenario.platform }}
+    strategy:
+      fail-fast: false
+      matrix:
+        scenario:
+          - {platform: ubuntu-latest, psycopg2-name: psycopg2}
+          - {platform: macos-latest, psycopg2-name: psycopg2-binary}
+    steps:
+      - name: "Check out repository"
+        uses: actions/checkout@v4
+
+      - name: "Test psycopg2 name"
+        run: |
+          python -m pip install .
+          PSYCOPG2_PIP_ENTRY=$(pip list | grep "psycopg2 " || pip list | grep psycopg2-binary)
+          echo $PSYCOPG2_PIP_ENTRY
+          PSYCOPG2_NAME="${PSYCOPG2_PIP_ENTRY%% *}"
+          echo $PSYCOPG2_NAME
+          if [[ "${PSYCOPG2_NAME}" != "${{ matrix.scenario.psycopg2-name }}" ]]; then
+            exit 1
+          fi

pyproject.toml

@@ -1,5 +1,5 @@
 [project]
-dynamic = ["version", "dependencies"]
+dynamic = ["version"]
 name = "dbt-postgres"
 description = "The set of adapter protocols and base functionality that supports integration with dbt-core"
 readme = "README.md"
@@ -22,6 +22,18 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
 ]
+dependencies = [
+    # install `psycopg2` on linux (assumed production)
+    'psycopg2>=2.9,<3.0; platform_system == "Linux"',
+    # install `psycopg2-binary` on macos/windows (assumed development)
+    'psycopg2-binary>=2.9,<3.0; platform_system != "Linux"',
+    "dbt-adapters>=0.1.0a1,<2.0",
+    # add dbt-core to ensure backwards compatibility of installation, this is not a functional dependency
+    "dbt-core>=1.8.0a1",
+    # installed via dbt-adapters but used directly
+    "dbt-common>=0.1.0a1,<2.0",
+    "agate>=1.0,<2.0",
+]
 
 [project.urls]
 Homepage = "https://github.com/dbt-labs/dbt-postgres"
@@ -43,9 +55,6 @@ packages = ["dbt"]
 [tool.hatch.version]
 path = "dbt/adapters/postgres/__version__.py"
 
-[tool.hatch.build.hooks.custom]
-path = "./hatch_build.py"
-
 [tool.hatch.envs.default]
 dependencies = [
     "dbt-adapters @ git+https://github.com/dbt-labs/dbt-adapters.git",