builder for '/nix/store/6pbqqq6bl1s91kf4yhdnn5q02zaafl4k-python3.7-snuggs-1.4.3.drv' failed with exit code 1; last 10 log lines:
          assert excinfo.value.offset == 3
          exception_options = ['expected a function or operator',
                               'Expected {Forward: ... | Forward: ...}']
  >       assert str(excinfo.value) in exception_options
  E       assert 'Expected {Forward: Group:({{{{Suppress:("(") map | partial} {{{"nil" | : ...} | * | + | / | - | & | | | <= | < | == |... starting with \' ending with \' | quoted string, starting with " ending with "}}]...} Suppress:(")")})}, found \'b\' ' in ['expected a function or operator', 'Expected {Forward: ... | Forward: ...}']
  E        +  where 'Expected {Forward: Group:({{{{Suppress:("(") map | partial} {{{"nil" | : ...} | * | + | / | - | & | | | <= | < | == |... starting with \' ending with \' | quoted string, starting with " ending with "}}]...} Suppress:(")")})}, found \'b\' ' = str(ExpressionError('Expected {Forward: Group:({{{{Suppress:("(") map | partial} {{{"nil" | : ...} | * | + | / | - | & | |...starting with \' ending with \' | quoted string, starting with " ending with "}}]...} Suppress:(")")})}, found \'b\' '))
  E        +    where ExpressionError('Expected {Forward: Group:({{{{Suppress:("(") map | partial} {{{"nil" | : ...} | * | + | / | - | & | |...starting with \' ending with \' | quoted string, starting with " ending with "}}]...} Suppress:(")")})}, found \'b\' ') = <ExceptionInfo ExpressionError tblen=3>.value

  test_snuggs.py:220: AssertionError

[6 built, 1 copied (33.3 MiB), 7.2 MiB DL]
https://github.com/NixOS/nixpkgs/pull/72226
6 package were build:
python27Packages.rasterio python27Packages.snuggs python37Packages.rasterio python37Packages.snuggs python38Packages.rasterio python38Packages.snuggs