Unfortunately, the release you are pointing to comes with a license change that affects debian. The following was added as a preamble tothe LGPL:
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 names Ion, Ion3, and other derived names:
Derived works and altered versions that significantly differ from the
original copyright holder's versions, must either a) be given names
that can not be associated with the "Ion" project, or b) be qualified
as "Ion soup", and still be considerable as customised versions of this
software. In both cases, executables must also be given names that do
not conflict with the original copyright holder's version, and the
copyright holder 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 copyright
holder. If "Ion" occurs in the name, it must be in the form
"Foo for Ion" instead of "Ion Foo", etc.
If the name of the project (Ion), resp. names of particular branches
(Ion1, Ion2, Ion3, etc.), are used without further prominent version
qualifiers and notices of possible out-datedness to distribute this
software, then the following conditions must hold: a) The version
distributed online may not significantly differ from the copyright
holder's latest release marked stable, resp. latest release on a
branch, within a reasonable delay (normally 28 days) from the release.
b) The holders of physical distribution media are provided ways to
upgrade to the latest release within this same delay.
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 copyright holder 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.
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.
The copyright holder, however, 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 a `installpkg` command for installing packages. Then the action
`installpkg ion3` (resp. `installpkg ion`) should always install the
latest release of Ion3 (resp. the latest stable release), online
connectivity provided. The action `installpkg ion-3ds-20070318` may
at any date install this particular mentioned release. Likewise
`installpkg ion-soup` may install any non-conflicting customised
version.
------------
This license chanage has the effect that debian will have to distribute
ion under a name not containing "ion" (afaict).
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