ninja: error: '../src/src/settings.ui', needed by 'src/budgie-pixel-saver-applet-resources.c', missing and no known rule to make it

[meydjer]

meydjer@mpc:~/Downloads/budgie-pixel-saver-applet$ mkdir build && cd build
meydjer@mpc:~/Downloads/budgie-pixel-saver-applet/build$ meson --prefix /usr --buildtype=plain ..
The Meson build system
Version: 0.44.0
Source dir: /home/meydjer/Downloads/budgie-pixel-saver-applet
Build dir: /home/meydjer/Downloads/budgie-pixel-saver-applet/build
Build type: native build
Project name: budgie-pixel-saver-applet
Native C compiler: cc (gcc 5.4.0)
Native Vala compiler: valac (valac 0.30.1)
Build machine cpu family: x86_64
Build machine cpu: x86_64
Found pkg-config: /usr/bin/pkg-config (0.29.1)
Native dependency gtk+-3.0 found: YES 3.18.9
Native dependency gdk-x11-3.0 found: YES 3.18.9
Native dependency glib-2.0 found: YES 2.48.2
Native dependency libpeas-1.0 found: YES 1.16.0
Native dependency budgie-1.0 found: YES 2
Native dependency libwnck-3.0 found: YES 3.14.1
Native dependency glib-2.0 found: YES 2.48.2
WARNING: GLib compiled dependencies do not work reliably with 
the current version of GLib. See the following upstream issue: https://bugzilla.gnome.org/show_bug.cgi?id=774368
Program meson_post_install.py found: YES (/usr/bin/env python3 /home/meydjer/Downloads/budgie-pixel-saver-applet/meson_post_install.py)
Build targets in project: 4
Found ninja-1.8.2 at /usr/bin/ninja
meydjer@mpc:~/Downloads/budgie-pixel-saver-applet/build$ ninja
ninja: error: '../src/src/settings.ui', needed by 'src/budgie-pixel-saver-applet-resources.c', missing and no known rule to make it
meydjer@mpc:~/Downloads/budgie-pixel-saver-applet/build$ sudo ninja install
ninja: error: '../src/src/settings.ui', needed by 'src/budgie-pixel-saver-applet-resources.c', missing and no known rule to make it
meydjer@mpc:~/Downloads/budgie-pixel-saver-applet/build$

[rkunschke]

I solved it myself
Downgrade libpeas to older version and the Build worked.