Every day a new picture from: Astronomy Picture of the Day

• wallpaper-switch.go - the acctual application
• wallpaper-switch.service - systemd service
• wallpaper-switch.timer - systemd timer

wallpaper-switch checks the RSS feed from NASA's Astronomy Picture of the Day and, for a new content, sets a desktop background using gsettings command.

It stores its status (file status.toml) and the current desktop wallpaper in "XDG_DATA_HOME/wallpaper-switch" or, if the envrionment variable is not set, in ".local/share/wallpaper-switch".

• Install Go (if you don't have it):

sudo pacman -S go

Create a directory to store go source code fetched from other repositories

mkdir -p ~/repos/gosource

and add it to the $GOPATH environment variable.

• Install dependencies:

go get -u github.com/naoina/toml

go get -u github.com/nu7hatch/gouuid

go get -u golang.org/x/net/html

• compile:

go build wallpaper-switch.go

• place files wallpaper-switch.timer and wallpaper-switch.service in ~/.local/share/systemd/user

• modify variable ExecStart in wallpaper-switch.service - it should point to a binary of wallpaper-switch.

Then, execute the following commands:

systemctl --user enable wallpaper-switch.timer systemctl --user start wallpaper-switch.timer