[Bug 1135700] Review Request: antlr4 - parser generator tool

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https://bugzilla.redhat.com/show_bug.cgi?id=1135700



--- Comment #4 from Cooper Clauson <ceclauson@xxxxxxxxxxx> ---
(In reply to Christopher Meng from comment #2)
> You should contact current antlr3 owner to see if this package is needed.
> antlr package in Fedora is maintained by people from Red Hat and they know
> what kind of version they want. A4 has changed a lot and as far as I know no
> software depends on it so far. 
> 
> Basically I think you can't go further without help from them.

Hi Christopher,

I've gone ahead and emailed Colin Walters, the maintainer of antlr3 to see if
he would like to look at this.  However, I'm thinking that your objections may
be based on a misunderstanding of the relationship between antlr3 and antlr4.

Antlr4 is not backwards compatible with antlr3, and because of this it in no
way replaces, obsoletes or interferes with antlr3.  A good analogy is GTK+,
GTK2 and GTK3.  Each of these major versions broke backwards compatibility, and
as a result, all three are offered in the repository.  Similarly, antlr3 and
antlr4 and essentially two different tools, both can be offered in the
repository and both can be installed simultaneously on a system.

So while certainly it may be helpful for the antlr3 maintainer to look over the
package, technically there is no reason that this couldn't be introduced into
the repository without worrying about antlr and antlr3.  Aside from the build
dependency that I mentioned earlier and obvious geneological relationship,
antlr3 and antlr4 are essentially unrelated tools.

Thanks,
Cooper

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