Unable to find compatible versions of toolchanin and libadalang for the jsonbuilder tool

[mgrojo]

Thanks for publishing this library and generator. I wanted to give it a try, but I couldn't find the correct combination of libadalang and the toolchain. Every attempt led to compilation errors. For example, this is using:

• libadalang 22.0.0
• gprbuild 22.0.1
• gnat_native 12.1.2

The errors for these versions were:

Note: Building jsonbuilder=0.1.0-dev/gnatcoll-json-builder.gpr...
gnatcoll.gpr:254:07: warning: value "windows" is not used as label
Compile
   [Ada]          langkit_support-file_readers.adb
   [Ada]          langkit_support-lexical_envs_impl.adb
   [Ada]          langkit_support-adalog-predicates.adb
   [Ada]          langkit_support-adalog-abstract_relation.adb
langkit_support-adalog-predicates.adb:155:13: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          langkit_support-array_utils.adb
langkit_support-adalog-abstract_relation.ads:66:54: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          langkit_support-diagnostics-output.adb
langkit_support-array_utils.adb:145:46: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-array_utils.ads:71:11: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          langkit_support-adalog-operations.adb
langkit_support-file_readers.adb:97:12: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          langkit_support-vectors.adb
langkit_support-adalog-operations.adb:277:25: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-adalog-operations.adb:288:25: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-adalog-operations.adb:303:15: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-adalog-operations.adb:348:15: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          langkit_support-symbols.adb
langkit_support-vectors.ads:47:45: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          gnatcoll-arg_lists.adb
langkit_support-diagnostics-output.adb:83:28: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-diagnostics-output.adb:97:54: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-diagnostics-output.adb:99:57: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
   [Ada]          gnatcoll-json-builder.adb
langkit_support-symbols.adb:24:09: warning: unit "Ada.Unchecked_Conversion" is not referenced [-gnatwu]
langkit_support-lexical_envs_impl.adb:2041:19: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-lexical_envs_impl.adb:2055:26: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-lexical_envs_impl.adb:2083:16: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-lexical_envs_impl.adb:2092:16: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-lexical_envs_impl.adb:2112:16: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
langkit_support-lexical_envs_impl.ads:122:33: warning: array aggregate using () is an obsolescent syntax, use [] instead [-gnatwj]
gnatcoll-arg_lists.adb:138:14: error: ambiguous call to "Append"
gnatcoll-arg_lists.adb:138:14: error: possible interpretation at a-convec.ads:471, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:138:14: error: possible interpretation at a-convec.ads:483, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:177:10: error: ambiguous call to "Append"
gnatcoll-arg_lists.adb:177:10: error: possible interpretation at a-convec.ads:471, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:177:10: error: possible interpretation at a-convec.ads:483, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:190:10: error: ambiguous call to "Append"
gnatcoll-arg_lists.adb:190:10: error: possible interpretation at a-convec.ads:471, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:190:10: error: possible interpretation at a-convec.ads:483, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:459:33: error: ambiguous call to "Append"
gnatcoll-arg_lists.adb:459:33: error: possible interpretation at a-convec.ads:471, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:459:33: error: possible interpretation at a-convec.ads:483, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:476:36: error: ambiguous call to "Append"
gnatcoll-arg_lists.adb:476:36: error: possible interpretation at a-convec.ads:471, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:476:36: error: possible interpretation at a-convec.ads:483, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:518:13: error: ambiguous call to "Append"
gnatcoll-arg_lists.adb:518:13: error: possible interpretation at a-convec.ads:471, instance at gnatcoll-arg_lists.ads:160
gnatcoll-arg_lists.adb:518:13: error: possible interpretation at a-convec.ads:483, instance at gnatcoll-arg_lists.ads:160
gnatcoll-json-builder.adb:114:15: error: "Ada_Concrete_Type_Decl" is undefined

   compilation of gnatcoll-arg_lists.adb failed
   compilation of langkit_support-symbols.adb failed
   compilation of langkit_support-vectors.adb failed
   compilation of langkit_support-adalog-operations.adb failed
   compilation of langkit_support-diagnostics-output.adb failed
   compilation of langkit_support-array_utils.adb failed
   compilation of langkit_support-adalog-abstract_relation.adb failed
   compilation of langkit_support-adalog-predicates.adb failed
   compilation of langkit_support-lexical_envs_impl.adb failed
   compilation of langkit_support-file_readers.adb failed
   compilation of gnatcoll-json-builder.adb failed

gprbuild: *** compilation phase failed
ERROR: Command ["gprbuild", "-s", "-j0", "-p", "-P", "/home/mgr/src/github/persan/gnatcoll-json/jsonbuilder/gnatcoll-json-builder.gpr"] exited with code 4
ERROR: Compilation failed.

Which are the compatible versions?

Using Alire is a good way to avoid these compatibility problems.