@jengelh all of your patches are upstream now :)

One minor difference with your "nolimit" fix, the upstream has chosen to emit a warning instead of an error:

https://github.com/Doom-Utils/deutex/commit/f8b1336bbcb7bc387d3e856cc7c9f75697cd0f0b#diff-737f0ad7650b480ebdf2807f16ae18ca

- update to 5.1.1
* Fixed: texture name array: the maximum possible string size is
now supported.
* Fixed: some warnings and errors with old versions of pkg-config
and gcc
* Fixed: Aliasing errors (caused crashes on some architectures,
such as sparc64)
* Can now build WADs with an arbitrary number of lumps. A warning
is emitted when more than 4046 are included (vanilla Doom limit).
- remove 0001-increase-array-size-for-char-tname-variable-51.patch
* upstreamed in 7024dd74a33780ef2dbdf614f4e52526cc3ab457
- remove 0001-Fix-strict-aliasing-violations.patch
* upstreamed in 85d821dd3c145be1a998ca2a704930caaad73030
- remove deutex-proto.diff
* upstreamed in 07bd0a5083fc15db20bee9056511bd3e10dd1362
- remove deutex-nolimit.diff
* fixed in f8b1336bbcb7bc387d3e856cc7c9f75697cd0f0b
- remove deprecated BuildRoot option (forwarded request 562640 from avindra)