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extended-default.rst

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Extended default

Configuration

  • introduce extended_default option name
  • off by default in v4 as previously soft/1 was an error
  • on by default in v5, option could even disappear

  • set as a separate option than advanced_version_spec

    • as it affects also basic soft/vers version specification
    • seem easier to understand for user if concepts are distinguished

Specification

  • Take partial version identifier and returns matches

    • for soft/10.1.2.4 soft/10.1.2.3 soft/10.1.1
    • query soft/10 returns highest among 3
    • query soft/10.1 returns highest among 3
    • query soft/1 returns nothing
    • query soft/10.1.2 returns highest among soft/10.1.2.4 soft/10.1.2.3

  • In situation where soft/1.1(default) soft/1.2 soft/2.1 soft/2.2

    • query soft/1 returns soft/1.1
    • query soft/2 returns soft/2.2

  • Character considered as version number separator: .

    • list: . and -
    • - was also considered initially, but cannot determine in all case the highest version specified after this character (may find a hash name, strings like rc, alpha, beta, etc)
    • not possible with + as it is used by variant specification

  • Does not apply to the root part of module name

    • e.g. foo.2

  • If implicit_default is disabled

    • it makes extended_default inoperant if queried version does not include a defined default
    • even if only one modulefile matches query
    • with situation described above query soft/1 returns soft/1.1
    • but query soft/2 returns an error as no default is found among version 2 modulefiles

  • Contexts where it could be used

    • module_version_specification_to_return_all_matching_modules

      • on specification that are processed as a wild search, extended_default has no impact

        • as a wildcard character * is appended to specification
        • affects avail sub-command
    • module_version_specification_to_select_one_module
    • module_version_specification_to_check_compatibility