Added modular configuration mechanism.

[ion3.git] / LICENSE

Copyright (c) Tuomo Valkonen 1999-2007.

The code of this project is "essentially" licensed under the LGPL, version
2.1, unless otherwise indicated in components taken from elsewhere. It is
reproduced below. Additionally, the following terms apply to the use of 
the name of the project, Ion(tm), names of particular "branches" such as
Ion3(tm), and other derived names:

  If the name Ion(tm) or other names that can be associated with the Ion
  project are used to distribute this software, then:

    - A version that does not significantly differ from one of the
      original author's versions must be provided by default. 

    - When there are no further prominent notices of possible out-datedness, 
      and no prominent original author's version qualifiers present (resp. 
      only branch qualifier is present), then the version distributed online
      may not significantly differ from the original author's latest stable
      release (resp. latest release on the branch) within a reasonable delay
      (normally 28 days). The holders of physical distribution media must 
      be provided ways to upgrade to the latest release within this delay.

    - Significantly altered versions may be provided only if the user
      explicitly requests for those modifications to be applied, and 
      is prominently notified that the software is no longer considered 
      the standard version, and is not supported by the original author. 
      The version string displayed by the program must describe these
      modifications and the "support void" status.

  Derived works that do not satisfy the above terms must be renamed so
  that they can not be associated with the Ion project, their executables
  must be given names that do not conflict with the original author's 
  version, and this author may not be referred to for support.

  Modules and other (standalone) extensions to Ion must also be named 
  so that they can not be confused to be supported by the original
  author. If "Ion" occurs in the name, it must be in the form
  "Foo for Ion" instead of "Ion Foo", etc.

  This name policy notice may not be altered, and must be included in
  any altered versions and binary redistributions. It may only be
  removed when using small portions of the code in unrelated projects. 

  The original author and the Ion project retain the same rights to
  your modifications that it would have under the LGPL or GPL without
  these or similar additional terms.

  If you fail to follow these terms, you lose the rights granted to
  you by the LGPL.

Explanations:

Significant change: Bug fixes are a priori insignificant as additions. 
Basic changes that are needed to install or run the software on a target
platform are a priori insignificant. Additionally, basic configuration
changes to better integrate the software with the target platform, 
without obstructing the standard behaviour, are a priori insignificant.
Everything else is significant. The author reserves the right to refine
the definition of significant changes on a per-case basis. Please consult
when in doubt. 

Distributions: For example, suppose an aggregate distribution of software
provides an `installpkg` command for installing packages. Then the action
`installpkg ion3` (resp. `installpkg ion`) should within a reasonable 
delay install the latest release of Ion3 (resp. the latest stable release),
or prominently notify the user that the provided version is not or may not
be the latest. The action `installpkg ion-3ds-20070318` may at any date 
install this particular mentioned release. Likewise, the action `installpkg
--support-void-featurex ion3` may apply additional patches to the latest
Ion3, within the further constraints set above.

The intent of these terms is to curb the power that "distributions", as
the primary sources of software for many users, have in defining what
is perceived as Ion. By providing significantly modified versions and
out-dated development snapshots without prominently mentioning this fact,
they do not present the work in a light that the author can agree with,
and create a burden of dealing with (new) users seeking for support for
such versions.


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