Install Qt Designer on Gentoo

On Gentoo, Qt Designer is typically installed through the Qt tools package.

sudo emerge --ask dev-qt/qttools

Gentoo package metadata lists dev-qt/qttools as the Qt Tools collection. :contentReference[oaicite:1]{index=1}

If your system is missing the GUI/designer pieces, add the USE flags below and rebuild.

sudo mkdir -p /etc/portage/package.use

                                        printf "dev-qt/qttools designer widgets\n" | sudo tee -a /etc/portage/package.use/qttools
                                        printf "dev-qt/qtbase gui widgets opengl\n" | sudo tee -a /etc/portage/package.use/qtbase

                                        sudo emerge --ask dev-qt/qtbase dev-qt/qttools

Gentoo’s Qt package pages show Qt-related USE flags and package-specific Designer support. :contentReference[oaicite:2]{index=2}

designer

If that does not launch, try:

find /usr -type f -name designer 2>/dev/null

Then run the full path that is returned.

Gentoo Qt builds commonly require matching flags between qtbase and other Qt modules. If you hit an OpenGL-related dependency conflict, set the flags explicitly and rebuild.

printf "dev-qt/qtbase gui widgets opengl\n" | sudo tee /etc/portage/package.use/qtbase
                                        sudo emerge --ask --update --deep --newuse dev-qt/qtbase dev-qt/qttools

Gentoo Qt package dependency data reflects these feature linkages. :contentReference[oaicite:3]{index=3}

equery files dev-qt/qttools | grep -i designer

which designer

designer --help