Does not build "Error: undeclared field: 'pyType=' for type pyobjectBase.PyObject"

[enthus1ast]

i cloned the repo and did a nimble install:

david@dnd:~/projects/forks/npython$ nimble install 
   Building npython/npython using c backend
      Info: compiling nim package using /home/david/.nimble/pkgs2/nim-2.2.0-170193e79270683c1065a3df15842512187216b6/bin/nim
 Nim Output /home/david/projects/forks/npython/Python/asdl.nim(343, 16) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(344, 21) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(346, 15) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(354, 11) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(354, 23) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(354, 45) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(358, 11) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(358, 23) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(358, 45) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(361, 35) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(361, 51) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(362, 18) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(362, 30) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(363, 16) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(365, 16) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(366, 16) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(369, 49) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(372, 37) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(372, 49) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(373, 42) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(373, 54) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(374, 26) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(374, 38) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(375, 23) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(375, 35) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(376, 18) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(376, 31) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(377, 23) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(377, 36) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(379, 15) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(379, 26) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(380, 13) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(380, 34) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(380, 50) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(380, 64) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(381, 27) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(383, 17) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(384, 26) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(384, 41) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(384, 53) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(386, 22) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(387, 24) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(397, 27) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(402, 14) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(402, 26) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(403, 13) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(404, 37) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(405, 36) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(406, 49) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(407, 41) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(410, 15) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(414, 29) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(414, 40) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(415, 24) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(415, 39) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(416, 35) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(416, 53) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(417, 19) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(425, 14) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(426, 15) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(432, 15) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(432, 28) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(432, 41) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(433, 19) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(446, 62) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(449, 24) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(449, 42) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(449, 54) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(451, 29) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(451, 40) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(451, 53) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(452, 21) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(452, 39) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(452, 52) Warning: Number of spaces around '*' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(454, 62) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(457, 32) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(460, 45) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Python/asdl.nim(462, 47) Warning: Number of spaces around '?' is not consistent [Spacing]
        ... /home/david/projects/forks/npython/Objects/pyobjectBase.nim(237, 1) Warning: A custom '=destroy' hook which takes a 'var T' parameter is deprecated; it should take a 'T' parameter [Deprecated]
        ... /home/david/projects/forks/npython/Objects/pyobjectBase.nim(346, 47) template/generic instantiation of `newPyTypePrivate` from here
        ... /home/david/projects/forks/npython/Objects/pyobjectBase.nim(231, 53) template/generic instantiation of `pyCFuncPragma` from here
        ... /home/david/projects/forks/npython/Objects/pyobjectBase.nim(342, 16) Error: undeclared field: 'pyType=' for type pyobjectBase.PyObject [type declared in /home/david/projects/forks/npython/Objects/pyobjectBase.nim(189, 3)]
       Tip: 8 messages have been suppressed, use --verbose to show them.
nimble.nim(419)          buildFromDir

    Error:  Build failed for the package: npython
[ble: exit 1]

$ nim --version
Nim Compiler Version 2.2.6 [Linux: amd64]
Compiled at 2025-10-31
Copyright (c) 2006-2025 by Andreas Rumpf

git hash: ab00c56904e3126ad826bb520d243513a139436a
active boot switches: -d:release

[litlighilit]

Sorry for later reply, (it seems I forgot to subscribe the notification)

Maybe you can give it a try again? (after git pull)
I've tested against the newest commit using the same version of Nim (2.2.6, Linux)
And it compiled and runs well

(And iirc, the bug did exist (for a small period), but gotten fixed soon.
What a pity that you just happened to run into such a subtle BUG
)

[litlighilit]

For the huge Warning: Number of spaces around '?' is not consistent [Spacing]

it's (also) a bug of Nim, (and I just cannot find a suitable way to get rid of it)
often I pass --warning[Spacing]:off cmdline flags to Nim when compiling