Disable all extras in RHEL builds

The vast majority of these extras require dependencies not available in
RHEL.  Disabling them does not affect the ability to use the packages
with those dependencies installed from a different source, but it does
avoid the unwanted build dependencies.

python-sqlalchemy.spec

@@ -3,7 +3,7 @@
 
 # The asyncmy Python package isn’t available in x86 (32bit)
 %ifnarch %ix86
-%bcond asyncmy 1
+%bcond asyncmy %{undefined rhel}
 %else
 %bcond asyncmy 0
 %endif
@@ -14,6 +14,7 @@
 %global srcname SQLAlchemy
 %global canonicalname %{py_dist_name %{srcname}}
 
+%if %{undefined rhel}
 %global python_pkg_extras \
     asyncio \
     mssql_pymssql \
@@ -29,6 +30,7 @@
     aioodbc \
     aiosqlite \
     %{?with_asyncmy:asyncmy}
+%endif
 
 Name:           python-%{canonicalname}
 Version:        2.0.26
@@ -46,9 +48,6 @@ BuildRequires:  findutils
 BuildRequires:  gcc
 BuildRequires:  python3-devel >= 3.7
 # The dependencies needed for testing don’t get auto-generated.
-%if %{with mypy}
-BuildRequires:  python3dist(mypy)
-%endif
 BuildRequires:  python3dist(pytest)
 %if %{with xdist}
 BuildRequires:  python3dist(pytest-xdist)
@@ -78,8 +77,10 @@ as you choose, determining relationships based on foreign keys or letting you
 define the join conditions explicitly, to bridge the gap between database and
 domain.
 
+%if %{undefined rhel}
 # Subpackages to ensure dependencies enabling extra functionality
 %pyproject_extras_subpkg -n python3-sqlalchemy %python_pkg_extras
+%endif
 
 %package doc
 Summary:        Documentation for SQLAlchemy
@@ -90,7 +91,7 @@ Documentation for SQLAlchemy.
 
 
 %generate_buildrequires
-%pyproject_buildrequires -x %{gsub %{quote:%python_pkg_extras} %%s+ ,}
+%pyproject_buildrequires %{!?rhel:-x %{gsub %{quote:%python_pkg_extras} %%s+ ,}}
 
 
 %prep