drop Python 3.7

.github/workflows/test-lock.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11" ]
+        python-version: [ "3.8", "3.9", "3.10", "3.11" ]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out OQpy
@@ -23,7 +23,7 @@ jobs:
 
       - name: Install poetry
         run: |
-          make install-poetry
+          make install-poetry poetry_version=1.5.1
           poetry --version
           poetry config virtualenvs.in-project true
 

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11" ]
+        python-version: [ "3.8", "3.9", "3.10", "3.11" ]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out OQpy
@@ -79,7 +79,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11" ]
+        python-version: [ "3.8", "3.9", "3.10", "3.11" ]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out OQpy
@@ -93,7 +93,7 @@ jobs:
 
       - name: Install poetry
         run: |
-          make install-poetry
+          make install-poetry poetry_version=1.5.1
           poetry --version
           poetry config virtualenvs.in-project true
 

Makefile

@@ -46,4 +46,4 @@ check-citation:
 .PHONY: install-poetry
 install-poetry:
 	command -v curl >/dev/null 2>&1 || { echo >&2 "please install curl and retry."; exit 1; }
-	curl -sSL https://install.python-poetry.org | python -
+	curl -sSL https://install.python-poetry.org | POETRY_VERSION=$(poetry_version) python -

oqpy/base.py

@@ -22,20 +22,23 @@
 from __future__ import annotations
 
 import math
-import sys
 from abc import ABC, abstractmethod
-from typing import TYPE_CHECKING, Any, Iterable, Optional, Sequence, Union
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Iterable,
+    Optional,
+    Protocol,
+    Sequence,
+    Union,
+    runtime_checkable,
+)
 
 import numpy as np
 from openpulse import ast
 
 from oqpy import classical_types
 
-if sys.version_info >= (3, 8):
-    from typing import Protocol, runtime_checkable
-else:
-    from typing_extensions import Protocol, runtime_checkable
-
 if TYPE_CHECKING:
     from oqpy import Program