uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/science/math/sage/patches/do-not-test-find-library.patch

@@ -0,0 +1,87 @@
+diff --git a/src/sage/env.py b/src/sage/env.py
+index c4953cfa65..47b880f9ad 100644
+--- a/src/sage/env.py
++++ b/src/sage/env.py
+@@ -244,81 +244,8 @@ os.environ['MPMATH_SAGE'] = '1'
+ SAGE_BANNER = var("SAGE_BANNER", "")
+ SAGE_IMPORTALL = var("SAGE_IMPORTALL", "yes")
+ 
+-
+-def _get_shared_lib_path(*libnames: str) -> Optional[str]:
+-    """
+-    Return the full path to a shared library file installed in
+-    ``$SAGE_LOCAL/lib`` or the directories associated with the
+-    Python sysconfig.
+-
+-    This can also be passed more than one library name (e.g. for cases where
+-    some library may have multiple names depending on the platform) in which
+-    case the first one found is returned.
+-
+-    This supports most *NIX variants (in which ``lib<libname>.so`` is found
+-    under ``$SAGE_LOCAL/lib``), macOS (same, but with the ``.dylib``
+-    extension), and Cygwin (under ``$SAGE_LOCAL/bin/cyg<libname>.dll``,
+-    or ``$SAGE_LOCAL/bin/cyg<libname>-*.dll`` for versioned DLLs).
+-
+-    For distributions like Debian that use a multiarch layout, we also try the
+-    multiarch lib paths (i.e. ``/usr/lib/<arch>/``).
+-
+-    This returns ``None`` if no matching library file could be found.
+-
+-    EXAMPLES::
+-
+-        sage: from sage.env import _get_shared_lib_path
+-        sage: "gap" in _get_shared_lib_path("gap")
+-        True
+-        sage: _get_shared_lib_path("an_absurd_lib") is None
+-        True
+-
+-    """
+-
+-    for libname in libnames:
+-        search_directories: List[Path] = []
+-        patterns: List[str] = []
+-        if sys.platform == 'cygwin':
+-            # Later down we take the first matching DLL found, so search
+-            # SAGE_LOCAL first so that it takes precedence
+-            if SAGE_LOCAL:
+-                search_directories.append(Path(SAGE_LOCAL) / 'bin')
+-            search_directories.append(Path(sysconfig.get_config_var('BINDIR')))
+-            # Note: The following is not very robust, since if there are multible
+-            # versions for the same library this just selects one more or less
+-            # at arbitrary. However, practically speaking, on Cygwin, there
+-            # will only ever be one version
+-            patterns = [f'cyg{libname}.dll', f'cyg{libname}-*.dll']
+-        else:
+-            if sys.platform == 'darwin':
+-                ext = 'dylib'
+-            else:
+-                ext = 'so'
+-
+-            if SAGE_LOCAL:
+-                search_directories.append(Path(SAGE_LOCAL) / 'lib')
+-            libdir = sysconfig.get_config_var('LIBDIR')
+-            if libdir is not None:
+-                libdir = Path(libdir)
+-                search_directories.append(libdir)
+-
+-                multiarchlib = sysconfig.get_config_var('MULTIARCH')
+-                if multiarchlib is not None:
+-                    search_directories.append(libdir / multiarchlib),
+-
+-            patterns = [f'lib{libname}.{ext}']
+-
+-        for directory in search_directories:
+-            for pattern in patterns:
+-                path = next(directory.glob(pattern), None)
+-                if path is not None:
+-                    return str(path.resolve())
+-
+-    # Just return None if no files were found
+-    return None
+-
+ # locate libgap shared object
+-GAP_SO = var("GAP_SO", _get_shared_lib_path("gap", ""))
++GAP_SO = var("GAP_SO", '/default')
+ 
+ # post process
+ if DOT_SAGE is not None and ' ' in DOT_SAGE: