Re: [PROPOSAL] Builder, a build system integration for Emacs

[Richard Stallman]

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  > The author of a program selects libraries to work with and specifies
  > them explicitly in the program build configuration. If those
  > libraries, in turn, depend on other libraries, a build system resolves
  > the full transitive closure of dependencies. If the program and each
  > library specify constraints on versions of their dependencies, the
  > build system is expected to validate that they are all satisfied,
  > and/or to find a set of versions that together satisfy all
  > constraints.

Thanks for explaining this.

What sort of "constraints on versions of their dependencies" are possible?
Are these numeric comparisons?

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)