Fixes needed for gappy v0.1.0a2 which did away with the libgap_soname

argument.

We also don't need sage.env.GAP_SO anymore. gappy detects the path to
the shared library automatically and doesn't need this, and it isn't
used anywhere else in Sage.

src/sage/env.py

@@ -281,7 +281,7 @@ def _get_shared_lib_path(*libnames: str) -> Optional[str]:
                 search_directories.append(libdir)
 
                 multiarchlib = sysconfig.get_config_var('MULTIARCH')
-                if multiarchlib is not None: 
+                if multiarchlib is not None:
                     search_directories.append(libdir / multiarchlib),
 
             patterns = [f'lib{libname}.{ext}']
@@ -299,8 +299,6 @@ def _get_shared_lib_path(*libnames: str) -> Optional[str]:
 # On Debian it's libsingular-Singular so try that as well
 SINGULAR_SO = var("SINGULAR_SO", _get_shared_lib_path("Singular", "singular-Singular"))
 
-# locate libgap shared object
-GAP_SO = var("GAP_SO", _get_shared_lib_path("gap", ""))
 
 # post process
 if ' ' in DOT_SAGE:

src/sage/libs/gap/libgap.pyx

@@ -221,7 +221,6 @@ from gappy.gapobj import GapObj
 from gappy.gap_includes cimport Obj
 from gappy.gap_globals import common_gap_globals
 
-import sage.env
 from sage.interfaces.gap_workspace import prepare_workspace_dir
 from sage.misc.cachefunc import cached_method
 from sage.misc.randstate cimport current_randstate
@@ -252,7 +251,7 @@ cdef class SageGappy(Gappy):
     def __init__(self):
         workspace, _ = get_workspace()
         Gappy.__init__(self, gap_root=gap_root(), workspace=workspace,
-                       autoload=True, libgap_soname=sage.env.GAP_SO)
+                       autoload=True)
 
     cpdef initialize(self):
         initializing = Gappy.initialize(self)