> Who else has encountered problems with packages breaking the semantic
versioning scheme

Not me.  I didn't know any of my packages were using this scheme.  Is it
widely adopted?


On Wed, Sep 19, 2012 at 6:43 PM, Austin William Wright <
[email protected]> wrote:

> I've noticed that quite a lot of Node.js packages are tagging version
> number zero for all their releases: 0.4.0, 0.9.9, 0.0.1, 0.27.4, etc (to
> pick from packages that I use). It's as if people think that if the program
> is not fully feature-complete, they shouldn't release version 1.0.0.
>
> You need not feel this way! Semver <http://semver.org/spec/v1.0.0.html> exists
> so that, in addition to providing a unique ID for each release, we can
> infer some basic facts about the compatibility of the release, in
> comparison to other releases. It doesn't mean your code has all the
> features you want, it doesn't mean it has any standard of quality, it
> doesn't even mean "beta" or "production-ready". All semver asks you to do
> is (1) tell us when you break reverse-compatibility of your public API, (2)
> tell us when you release a new feature, and (3) tell us when you patch a
> particular bug. *If you use major version zero, we lose all of this
> information.* By definition, major version zero carries no semantics
> whatsoever. ~0 (major version zero) is supposed to be used for internal
> development and quick iteration where nearly every change breaks of the
> public API. However, if you're releasing software publicly, your users
> expect some stability in your public API. The series of releases that are
> stable against one another should carry the same nonzero major revision
> number, like "1.x.x". If you accidentally make a change that breaks, then
> just release a bugfix release for the breakage, and optionally release a
> new major version that carries the breakage.
>
> If you don't identify when you break your public API, then developers have
> to manually figure out which releases are breaking, and which are safe to
> upgrade to.  We may have to carefully examine changelogs and create and run
> unit tests. This wastes developer time. It's also makes it hard to
> future-proof releases: If I know that 1.0.0 is compatible with my
> application, then so should 1.3.1, and any ~1 version. Unit tests are not a
> replacement for the major version number: When picking an appropriate
> package version to update to, developers (or automated programs) do not
> have access to changelogs or the source code to run unit tests on (nor
> should they). (There's also the corollary, version numbers are not a
> replacement for unit tests, of course.) Nor can per-module or per-function
> version numbers replace a package-wide version number. These sub-versions
> may be a good idea, but they do not tell us anything about which version of
> a package, something installed as a coherent whole, should be installed.
>
> Node.js itself is still releasing major version zero. This is unacceptable
> for all the same reasons. Node.js should be releasing 1.0.0 right now (and
> actually, a long while ago). Then, when a new feature is added (major
> change of an internal library, new core library, etc), increment the minor
> version number. If it breaks reverse-compatibility (crypto finally starts
> using buffers, say), increment the major revision number. It might be a
> minor breakage, in which case we can run all our tests and ensure it's no
> change that breaks the program, and then we can say "My program is
> compatible with Node.js ~2 as well as ~1.2". There is nothing so special
> about any feature like libuv that its release can't be marked with 2.0.0
> instead, it's just a number that tells us something broke. It doesn't mean
> it's conforming to any release schedule, it doesn't mean it's feature
> complete.
>
> Having "stable" and "unstable" branches is fine for Git development,
> however having stable/unstable version numbers is not: The stable branch
> should get it's own major version number. Unstable branches would be
> release candidates for the next major version number: 4.0.0-a1, 4.0.0-a4,
> 4.0.0-rc1, etc. (Of course this numbering scheme should be avoided in
> production for all the same reasons, it doesn't mean anything, it's just a
> period of rapid iteration and API breakage.)
>
> It's just a number, numbers are cheap. If you need to make a dozen
> consecutive, breaking releases, then simply number them accordingly, 3.0.0
> through 14.0.0. That's how semver works!
>
> Who else has encountered problems with packages breaking the semantic
> versioning scheme and reverse compatibility?
>
> Austin Wright.
>
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