Mark guile.1.0 as unavailable on systems shipping with new GCC

[Leonidas-from-XIV]

Related to #27771, guile.1.0 seems to also have an issue building on systems that ship with GCC 14.

FTBFS with a failure like this:

File "stubgen/dune", lines 12-16, characters 0-263: 12 | (rule (targets bindings_stubs_gen.exe)
13 |  (deps bindings_stubs_gen.c c_flags c_library_flags) 14 |  (action
15 |   (bash
16 |     "%{cc} bindings_stubs_gen.c -I `dirname %{lib:ctypes:ctypes_cstubs_internals.h}` -I %{ocaml_where} $(< c_flags) $(< c_library_flags) -o %{targets}")))
(cd _build/default/stubgen && /usr/bin/bash -e -u -o pipefail -c 'gcc -O2 -fno-strict-aliasing -fwrapv -fPIC -pthread -D_FILE_OFFSET_BITS=64 -Wall -fdiagnostics-color=always bindings_stubs_gen.c -I `dirname ../../_private/default/.pkg/ctypes/target/lib/ctypes/ctypes_cstubs_internals.h` -I /home/opam/.cache/dune/toolchains/ocaml-compiler.5.3.0-128080a60f158774bfad0f37dcf62390/target/lib/ocaml $(< c_flags) $(< c_library_flags) -o bindings_stubs_gen.exe')
bindings_stubs_gen.c: In function 'main':
bindings_stubs_gen.c:35:41: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   35 |      enum { check_SCM_UNDEFINED_const = (int)SCM_UNDEFINED };
      |                                         ^
bindings_stubs_gen.c:36:19: error: initialization of 'intptr_t' {aka 'long int'} from 'struct scm_unused_struct *' makes integer from pointer without a cast [-Wint-conversion]
   36 |      intptr_t v = (SCM_UNDEFINED);
      |                   ^
bindings_stubs_gen.c:42:35: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   42 |      enum { check_SCM_EOL_const = (int)SCM_EOL };
      |                                   ^
bindings_stubs_gen.c:43:19: error: initialization of 'intptr_t' {aka 'long int'} from 'struct scm_unused_struct *' makes integer from pointer without a cast [-Wint-conversion]
   43 |      intptr_t v = (SCM_EOL);
      |                   ^
bindings_stubs_gen.c:49:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   49 |      enum { check_SCM_BOOL_T_const = (int)SCM_BOOL_T };
      |                                      ^
bindings_stubs_gen.c:50:19: error: initialization of 'intptr_t' {aka 'long int'} from 'struct scm_unused_struct *' makes integer from pointer without a cast [-Wint-conversion]
   50 |      intptr_t v = (SCM_BOOL_T);
      |                   ^
bindings_stubs_gen.c:56:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   56 |      enum { check_SCM_BOOL_F_const = (int)SCM_BOOL_F };
      |                                      ^
bindings_stubs_gen.c:57:19: error: initialization of 'intptr_t' {aka 'long int'} from 'struct scm_unused_struct *' makes integer from pointer without a cast [-Wint-conversion]
   57 |      intptr_t v = (SCM_BOOL_F);
      |                   ^

[Leonidas-from-XIV]

Upstream issue: kiranandcode/guile-ocaml#3

[Leonidas-from-XIV]

@shonfeder What kind of reporter action is expected from me?

[shonfeder]

Not sure, unfortunately! I'm guessing I thought your comment on #27772 (comment) was indicating that you wanted that issue fixed before publishing this.

Is this ready to go from your perspective, and are the failing CI tests expected?

macos-homebrew-ocaml-4.14-amd64 (experimental)
guile.1.0 (failed: incompatible pointer to integer conversion initializing 'intptr_t' (aka 'long') with an expression of type 'SCM' (aka 'struct scm_unused_struct *') [-Wint-conversion])
macos-homebrew-ocaml-4.14-arm64 (experimental)
guile.1.0 (failed: incompatible pointer to integer conversion initializing 'intptr_t' (aka 'long') with an expression of type 'SCM' (aka 'struct scm_unused_struct *') [-Wint-conversion])
macos-homebrew-ocaml-5.3-amd64 (experimental)
guile.1.0 (failed: incompatible pointer to integer conversion initializing 'intptr_t' (aka 'long') with an expression of type 'SCM' (aka 'struct scm_unused_struct *') [-Wint-conversion])
macos-homebrew-ocaml-5.3-arm64 (experimental)
guile.1.0 (failed: incompatible pointer to integer conversion initializing 'intptr_t' (aka 'long') with an expression of type 'SCM' (aka 'struct scm_unused_struct *') [-Wint-conversion])

[Leonidas-from-XIV]

I thought your comment on #27772 (comment) was indicating that you wanted that issue fixed before publishing this.

Ah. No, I don't think that can be solved with a metadata change, it probably needs a medium-sized patch to get working. Or a conf package where one could specify conf-gcc < 14.

I assume the macOS failures mean that brew now also ships with GCC >= 14 and needs to be marked as unavailable…

[Leonidas-from-XIV]

I've excluded macOS but CI fails because of Curl failing to download the tarball. I can download the tarball fine on my machine so I assume it's some CI issue (or Github blocking CI or something of that sort).

[shonfeder]

See discussion at #27771 (comment)