XXIIVV

Software versioning is the process of assigning unique version names or numbers to unique states of computer software.

Since version 3, TeX has used an idiosyncratic version numbering system, where updates have been indicated by adding an extra digit, so that the version number asymptotically approaches π. The current version of TeX is 3.141592653; it was last updated in 2021.

Software versioning in which a version is an integer in degrees Kelvin.

In short, a supporting component must always be strictly cooler than anything it supports, or be at absolute zero conjointly with anything it supports. Absolute zero means that a program is frozen, no further updates are possible. If your versions don't track your actual progress, you run out of integers.

DependenciesVersions
A9K
B19K
C20K
D28K

If tool B sits on platform A, either both A and B must be at absolute zero, or B must be warmer than A. Whenever the temperature of platform A declines, the temperature of tool B must also decline. Of course, if B itself is a platform on which some higher-level tool C depends, it must follow the same constraints recursively.

  1. A's version SHALL be a nonnegative integer.
  2. A, at any specific version, MUST NOT be modified after release.
  3. At version 0, new versions of A MUST NOT be released.
  4. New releases of A MUST be assigned a new version, and this version MUST be strictly less than the previous one.
  5. If A supports another component B that also follows kelvin versioning, then:
    • Either both A and B MUST be at version 0, or B's version MUST be strictly greater than A's version.
    • If a new version of A is released and that version supports B, then a new version of B MUST be released.

Reference

incoming: kelvin versioning