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PROJ Provenance Review
See the guidelines for the provenance review here: https://wiki.osgeo.org/wiki/Code_Provenance_Review
Summarise the history of the source code, including discussion about code ownership and license over time.
List or reference a table of included libraries and/or components. Include:
- Library Name
- License
- Whether the library licence is compatible with the project
- Whether the library is compiled into the project's releases, or required as an external dependancy
- Whether the library is included in the project's code repository
- Issue? (link if issue if one exists)
- Ok? (Yes/No/Black - implies not checked yet)
- Comment(s)
| Library | License | Compatible? | Included in core? | Issue(s)? | OK? | Comments |
|---|---|---|---|---|---|---|
| SQLite | Public Domain | Yes | No | Yes | ||
| nlohmann/json | MIT | Yes | Yes | Yes | ||
| lrucache11 | BSD | Yes | Yes | Yes | License and author is attributed in the relevant source file |
List of source files, including code, documentation and data, including:
- File name
- License
- Copyright Holder (if known)
- License header included?
- Issue? (link if issue if one exists)
- Ok? (Yes/No/Black implies not checked yet)
- Comment(s)
The list of source files and their license status is maintained on Google Docs:
https://docs.google.com/spreadsheets/d/1Bdu73lw8I1iFX4cb7CIUF6yqWGDTcZKBfW0cUsEjCXk/edit?usp=sharing
List or reference all copyright holders of the project's source files. These are all the people that would need to be contacted if the license of the project is to be changed. List:
- Organisation or person
- Contact details for Organisation or person
- Issue? (link if issue if one exists)
- Comments
| Copyright Holder | Contact details | Issue? | Comments |
|---|---|---|---|
| Even Rouault | even.rouault@spatialys.com | ||
| Saurav Mohapatra | mohaps@gmail.com | ||
| Niels Lohmann | mail@nlohmann.me | ||
| Dropbox Inc. | dropbox.com | ||
| Thomas Knudsen | thokn@sdfe.dk | ||
| Frank Warmerdam | warmerdam@pobox.com | ||
| Charles Karney | charles@karney.com | ||
| Kurt Schwehr | schwehr@gmail.com | ||
| Howard Butler | howard@hobu.co | ||
| Kristian Evers | kreve@sdfe.dk | ||
| Andrea Antonello | andrea.antonello@hydrologis.com | ||
| Martin Desruisseaux | martin.desruisseaux@geomatys.com | ||
| Drazen Tutic | dtutic@geof.hr | ||
| Lovro Gradiser | Unknown | Worked on the same code as Drazen Tutic, who presumably can pass on any enquiries | |
| Philippe Rivière | philippe.riviere@illisible.net | ||
| Lukasz Komsta | sp8qed@onet.eu | ||
| Bojan Savric | BSavric@esri.com | ||
| Juernjakob Dugge | juernjakob@gmail.com | ||
| Martin Raspaud | martin.raspaud@smhi.se | ||
| Didier Richard | didier.richard@ign.fr | ||
| Thomas Flemming | tf@ttqv.com | ||
| Michael.A.Bull | Michael.A.Bull@jpl.nasa.gov | ||
| Bernhard Jenny | bernie.jenny@monash.edu | ||
| Martin Lambers | marlam@marlam.de | ||
| California Institute of Technology | www.caltech.edu | ||
| Ivan Veselov | veselov@gmail.com | ||
| Andrey Kiselev | dron@ak4719.spb.edu | ||
| Free Software Foundation | www.fsf.org |
List or reference a table of committers, including:
- Committer name
- Commit username in code repository
- Committer's employer(s) (if applicable)
- Committer (or employer) has signed contribution agreement? (yes/no)
| Committer | Username | Affiliation | Contribution Agreement Signed? | OK? |
|---|---|---|---|---|
| Frank Warmerdam | warmerdam | No | Yes | |
| Even Rouault | rouault | Spatialys | No | Yes |
| Kristian Evers | kbevers | SDFE | No | Yes |
| Thomas Knudsen | busstoptaktik | SDFE | No | Yes |
| Howard Butler | hobu | Hobu Inc | No | Yes |
| Mike Taves | mwtoews | GNS Science | No | Yes |
| Kurt Schwehr | schwehr | No | Yes | |
| Charles Karney | cffk | No | Yes |
The project has opted to not ask committers to sign a contribution agreement because 1) the MIT license is permissive which eliminates the desire to re-license the software, 2) it's an added layer of complexity to the project and 3) some developers has expressed that they will not sign such an agreement. An article on the problems with instating a contribution agreement can be found here
List or reference a list of any outstanding issues not already listed above. Typically link to issues in project's issue tracker.
The EPSG Terms of Use requires that modified data is not attributed to the EPSG Dataset when the modifications fall outside of the permitted list:
No data that has been modified other than as permitted in these Terms of Use shall be attributed to the EPSG Dataset.
As long as the data is not attributed to the EPSG dataset, the terms of the MIT license used for PROJ can also cover the SQL files and resulting database.
Both the OSD & DSFG permit only allowing modifications when a different name is used, to dissociate the original author from the modified work:
- Integrity of The Author's Source Code
The license may restrict source-code from being distributed in modified form only if the license allows the distribution of "patch files" with the source code for the purpose of modifying the program at build time. The license must explicitly permit distribution of software built from modified source code. The license may require derived works to carry a different name or version number from the original software. (This is a compromise. The Debian group encourages all authors not to restrict any files, source or binary, from being modified.)
This has allowed PROJ 6.0.0 and newer to stay in the main component of the Debian archive.