Warning, /packaging/flatpak-kde-applications/eigen.json is written in an unsupported language. File is not indexed.

 {
     "name": "eigen",
     "buildsystem": "cmake-ninja",
     "builddir": true,
     "sources": [
         {
             "type": "archive",
             "url": "https://gitlab.com/libeigen/eigen/-/archive/3.4.0/eigen-3.4.0.tar.bz2",
             "sha256": "b4c198460eba6f28d34894e3a5710998818515104d6e74e5cc331ce31e46e626",
             "x-checker-data": {
                 "type": "anitya",
                 "project-id": 666,
                 "stable-only": true,
                 "url-template": "https://gitlab.com/libeigen/eigen/-/archive/$version/eigen-$version.tar.bz2"
             }
         }
     ]
 }