You need to restore the meta attribute to compile things on hydra. I suggest replacing your commit with a complete revert of 119570c. You would also need to patch the build system to not try to write to /nix/store (see commit message for the original commit)

ok for the meta flag, but I compiled my version and it didn't try to write to /nix/store

cc @mguentner

I don't see any changes [1] since it was marked broken, so why would it be fixed

[1] https://github.com/NixOS/nixpkgs/commits/master/pkgs/applications/networking/sync/backintime

I see following in the build log:

#install dbus conf
install -d /nix/store/iinzv04gsbwd8kgil9d0kk0jbv4hgxs1-backintime-qt4-1.1.24/../etc/dbus-1/system.d
install --mode=644 net.launchpad.backintime.serviceHelper.conf /nix/store/iinzv04gsbwd8kgil9d0kk0jbv4hgxs1-backintime-qt4-1.1.24/../etc/dbus-1/system.d

Also

substituteStream(): WARNING: pattern '="/usr/share' doesn't match anything in file '/nix/store/iinzv04gsbwd8kgil9d0kk0jbv4hgxs1-backintime-qt4-1.1.24/bin/backintime-qt4'

true for the substitute I can remove it
but the install are ... in $out, so what is the problem?

Ok, I understand, it would mean add the new branch 1.2 maybe

Updated to 1.2.1 and qt5, currently, there is a problem running the qt5 app, it complains on a missing QPA plugin:

Back In Time
Version: 1.2.1

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime --license' for details.

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb, wayland-org.kde.kwin.qpa.

/nix/store/9rsxqq9n3rkcd3x8828a106d0ngvipb5-backintime-qt5-1.2.1/bin/.backintime-qt-wrapped: line 31: 22774 Aborted                 (core dumped) python3 -Es ${APP_PATH}/app.py "$@"

You might need to add an explicit wrapQtAppsHook to fix the missing Qt plugin problem

I meant not the hook, but an explicit call to wrapQtApp https://nixos.org/manual/nixpkgs/stable/#sec-language-qt

@veprbl I dont see the changes from your fore-pushed, were they rebased commits ?

@freezeboy Sorry, let me document what I've changed:

• added a missing space in 3d39d25#diff-189f4e80141b1b016da37c29f47a856298323b67a906b47c5359a38c0f6c4e21R4
• renamed file from qt5.nix to qt.nix
• changed value of the name attribute from backintime-qt5 to backintime-qt so that it matches the name of the package in all-packages.nix
• replaced qt5.callPackage with libsForQt5.callPackage
• replaced substituteInPlace configure --replace "/.." "" with substituteInPlace configure --replace '"/../etc' '"/etc' to prevent accidental substitutes