Does not compile on fedora

[kirollos-ha]

when compiling on fedora with mlton compilation fails with the following output

Generated file src/version.sml
Git version v1.7.13 2026-02-16
mlton -output aplt src/aplt.mlb
Warning: src/il/il.sml 415.7-415.8.
  Constructor redefined by fun: If.
    in: fun If (IL.T, b, c) = b | If (IL.  ...   => (default ()) end
Warning: src/il/il.sml 438.7-438.9.
  Constructor redefined by fun: Var.
    in: fun Var n = (IL.Var n)
Warning: src/il/il.sml 439.7-439.7.
  Constructor redefined by fun: I.
    in: fun I n = (IL.I n)
Warning: src/il/il.sml 442.7-442.7.
  Constructor redefined by fun: D.
    in: fun D n = (IL.D n)
Warning: src/il/il.sml 443.7-443.7.
  Constructor redefined by fun: C.
    in: fun C c = (IL.C c)
Error: src/version.sml 1.21-1.27.
  Syntax error: deleting  STRUCT SHORTSYMID.
Error: src/version.sml 1.28-1.28.
  Undefined structure: n.
Error: src/version.sml 1.55-1.55.
  Undefined variable: \.
Error: src/version.sml 1.46-1.54.
  Function not of arrow type.
    function: [string]
    in: "v1.7.13" \
Error: src/version.sml 1.56-1.56.
  Undefined variable: n.
Error: src/version.sml 1.83-1.83.
  Undefined variable: \.
Error: src/version.sml 1.71-1.82.
  Function not of arrow type.
    function: [string]
    in: "2026-02-16" \
Error: src/version.sml 1.84-1.84.
  Undefined variable: n.
Error: src/version.sml 1.149-1.149.
  Undefined variable: \.
Error: src/version.sml 1.103-1.148.
  Function not of arrow type.
    function: [string]
    in: "Linux 6.17.10-100.fc41.x86_64 x86_64 unknown" \
Error: src/version.sml 1.150-1.153.
  Undefined variable: nend.
Warning: src/version.sml 1.36-1.42.
  Type of variable was not inferred and could not be generalized: version.
    type: ???
    in: val version = "v1.7.13" \ n
Warning: src/version.sml 1.64-1.67.
  Type of variable was not inferred and could not be generalized: date.
    type: ???
    in: val date = "2026-02-16" \ n
Warning: src/version.sml 1.92-1.99.
  Type of variable was not inferred and could not be generalized: platform.
    type: ???
    in: val platform = "Linux 6.17.10-100  ...  6_64 unknown" \ nend
Error: src/aplt.sml 128.46-128.60.
  Undefined structure: Version.
Error: src/aplt.sml 129.43-129.54.
  Undefined structure: Version.
Error: src/aplt.sml 130.39-130.54.
  Undefined structure: Version.
make: *** [Makefile:40: aplt] Error 1

when compiling on fedora with mlkit (by running MLCOMP=mlkit make) compiation fails with the following output instead

Generated file src/version.sml
Git version v1.7.13 2026-02-16
mlkit -output aplt src/aplt.mlb
[reading source file:	src/flags.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-unicode/UTF8.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-parse/REGION.sig]
[reading source file:	src/util.sig]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-setmap/map/MONO_MAP.sig]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-setmap/set/MONO_SET.sig]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-random/RANDOM.sig]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-uref/uref.sig]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-sort/LIST_SORT.sig]
[reading source file:	src/flags.sml]
[wrote X64 code file:	src/MLB/RI_GC/flags.sml.s]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-unicode/Utf8.sml]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-unicode/MLB/RI_GC/Utf8.sml.s]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-parse/Region.sml]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-parse/MLB/RI_GC/Region.sml.s]
[reading source file:	src/util.sml]
[wrote X64 code file:	src/MLB/RI_GC/util.sml.s]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-setmap/map/OrderMapImpl.sml]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-setmap/set/OrderSetImpl.sml]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-random/Random.sml]
[wrote X64 code file:	src/tail/../lib/github.com/diku-dk/sml-random/MLB/RI_GC/Random.sml.s]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-uref/uref.sml]
[wrote X64 code file:	src/tail/../lib/github.com/diku-dk/sml-uref/MLB/RI_GC/uref.sml.s]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-sort/ListSort.sml]
[wrote X64 code file:	src/tail/../lib/github.com/diku-dk/sml-sort/MLB/RI_GC/ListSort.sml.s]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-unicode/UNICODE_CHARS.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-parse/PARSE.sig]
[reading source file:	src/laila/../statistics.sig]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-setmap/map/OrderMap.sml]
[reading source file:	src/tail/../lib/github.com/diku-dk/sml-setmap/set/OrderSet.sml]
[reading source file:	src/tail/apl.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-unicode/UnicodeChars.sml]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-unicode/MLB/RI_GC/UnicodeChars.sml.s]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/../sml-parse/Parse.sml]
[reading source file:	src/laila/../statistics.sml]
[wrote X64 code file:	src/laila/../MLB/RI_GC/statistics.sml.s]
[reading source file:	src/laila/../il/../lib/github.com/diku-dk/sml-setmap/map/StringMap.sml]
[compiling body of functor OrderMap (from source mono_map.mlb->OrderMap.sml) begin]
[compiling body of functor OrderMapImpl (from source mono_map.mlb->OrderMapImpl.sml) begin]
[wrote X64 code file:	src/laila/../il/../lib/github.com/diku-dk/sml-setmap/map/MLB/RI_GC/StringMap.sml.code3.s]
[compiling body of functor OrderMapImpl end]
[wrote X64 code file:	src/laila/../il/../lib/github.com/diku-dk/sml-setmap/map/MLB/RI_GC/StringMap.sml.code1.s]
[compiling body of functor OrderMap end]
[reading source file:	src/tail/apl.sml]
[wrote X64 code file:	src/tail/MLB/RI_GC/apl.sml.s]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/AplLex.sml]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/MLB/RI_GC/AplLex.sml.s]
[reading source file:	src/laila/../il/type.sig]
[reading source file:	src/tail/tail_type.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/AplAst.sml]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/MLB/RI_GC/AplAst.sml.s]
[reading source file:	src/laila/../il/il.sml]
[compiling body of functor OrderSet (from source mono_set.mlb->OrderSet.sml) begin]
[compiling body of functor OrderSetImpl (from source mono_set.mlb->OrderSetImpl.sml) begin]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/il.sml.code4.s]
[compiling body of functor OrderSetImpl end]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/il.sml.code2.s]
[compiling body of functor OrderSet end]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/il.sml.code1.s]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/il.sml.code5.s]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/il.sml.s]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/il.sml.code7.s]
[reading source file:	src/tail/tail_exp.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/APL_PARSE.sig]
[reading source file:	src/laila/../il/ilutil.sig]
[reading source file:	src/tail/tail.sig]
[reading source file:	src/lib/github.com/diku-dk/sml-aplparse/AplParse.sml]
[compiling body of functor Parse (from source parse.mlb->Parse.sml) begin]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/MLB/RI_GC/AplParse.sml.code2.s]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/MLB/RI_GC/AplParse.sml.code4.s]
[compiling body of functor Parse end]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/MLB/RI_GC/AplParse.sml.code1.s]
[wrote X64 code file:	src/lib/github.com/diku-dk/sml-aplparse/MLB/RI_GC/AplParse.sml.code5.s]
[reading source file:	src/laila/../il/ilutil.sml]
[wrote X64 code file:	src/laila/../il/MLB/RI_GC/ilutil.sml.s]
[reading source file:	src/tail/tail_exp.sml]
[reading source file:	src/laila/laila.sig]
[reading source file:	src/tail/tail_optimize.sml]
[reading source file:	src/laila/laila-flat-pull-arrays.sml]
[wrote X64 code file:	src/laila/MLB/RI_GC/laila-flat-pull-arrays.sml.s]
[reading source file:	src/tail/tail_type.sml]
[wrote X64 code file:	src/tail/MLB/RI_GC/tail_type.sml.s]
[reading source file:	src/laila/laila.sml]
[wrote X64 code file:	src/laila/MLB/RI_GC/laila.sml.s]
[reading source file:	src/tail/tail.sml]
[compiling body of functor TailExp (from source tail.mlb->tail_exp.sml) begin]
[compiling body of functor OrderMap (from source mono_map.mlb->OrderMap.sml) begin]
[compiling body of functor OrderMapImpl (from source mono_map.mlb->OrderMapImpl.sml) begin]
[wrote X64 code file:	src/tail/MLB/RI_GC/tail.sml.code4.s]
[compiling body of functor OrderMapImpl end]
[wrote X64 code file:	src/tail/MLB/RI_GC/tail.sml.code2.s]
[compiling body of functor OrderMap end]
Impossible: RegAlloc.check_same_kind(Combine): different node kinds
[[ERR in sub process:
  CRASH]]
Stopping compilation of MLB-file due to error (code 1).
make: *** [Makefile:40: aplt] Error 1

OS: Fedora 41
smlpkg version: v0.1.7 (v0.1.7-1-g7cd3f2e)
mlkit version: v4.7.14 [X64 Backend]
(could not get mlton version)