fish from shells:fish:nightly:master project

For Debian 7.0 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/shells:/fish:/nightly:/master/Debian_7.0/ /' | sudo tee /etc/apt/sources.list.d/shells:fish:nightly:master.list
curl -fsSL https://download.opensuse.org/repositories/shells:fish:nightly:master/Debian_7.0/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/shells_fish_nightly_master.gpg > /dev/null
sudo apt update
sudo apt install fish

For Debian 11 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/shells:/fish:/nightly:/master/Debian_11/ /' | sudo tee /etc/apt/sources.list.d/shells:fish:nightly:master.list
curl -fsSL https://download.opensuse.org/repositories/shells:fish:nightly:master/Debian_11/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/shells_fish_nightly_master.gpg > /dev/null
sudo apt update
sudo apt install fish

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/shells:fish:nightly:master/openSUSE_Tumbleweed/shells:fish:nightly:master.repo
zypper refresh
zypper install fish

For 15.4 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/shells:fish:nightly:master/15.4/shells:fish:nightly:master.repo
zypper refresh
zypper install fish