I have the same issue with all of Qt applications that are using `QDesktopServices::openUrl(...)`. I developed some applications that are using this method of Qt. In all of them I get this error when I want to open links: ``` Launch failed (/gnu/store/bi4m86lripz4fhhi4c34ylg5ckxsrqzs-xdg-utils-1.1.3/bin/xdg-open ....) ``` The current `xdg-utils` path in my store is: ``` /gnu/store/0zdclmgw5gnpifwb7jyrmplrk13wp0yz-xdg-utils-1.1.3/ ``` This is the references of my application by `guix gc`: ``` $ guix gc --references /gnu/store/dyrg1naixia5w4qg9d1mj8smi1lyww2n-px-software-0.3.3/ /gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib /gnu/store/2ql96jy3ilx219ddra32a6bdm8abzpzg-yaml-cpp-0.6.3 /gnu/store/6l9rix46ydxyldf74dvpgr60rf5ily0c-guile-3.0.7 /gnu/store/cfzp7ab58whr1jb5k64c0anc8cnv42x4-recutils-1.8 /gnu/store/dyrg1naixia5w4qg9d1mj8smi1lyww2n-px-software-0.3.3 /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31 /gnu/store/nrv3frmd7i0fqprmd7br6jhknhbx75fr-qtbase-5.15.2 /gnu/store/rykm237xkmq7rl1p0nwass01p090p88x-zlib-1.2.11 /gnu/store/zjb18dwpbcsqdgjq1fsfx8xnpywzkj2c-px-gui-library-0.1.7 ``` I think the wrong path will be set here: https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/qt.scm#n442 I don't know why and where this wrong `xdg-utils` path come in. -- Hamzeh Nasajpour PantherX Team