I'm trying to install QtPass on OS X 10.12.6 according to the instructions on the main site. I've installed the GPGSuite from gpgtools.org. I've also installed pass successfully, and it works fine from the command line.

I've also installed qtpass itself just fine with:

$ brew cask install qtpass

..but I'm unable to install the pinentry program. I'm trying to follow the steps under "Dependencies" on the main site front page. The first commands work fine:

$ brew install qt5
$ brew link --overwrite --force qt5

..but the next one fails:
$ xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates

Assuming that that means I've already done what needed to be done in that stage, I tried the next command with no more success:

$ qmake && make && macdeployqt QtPass.app
Usage: qmake [mode] [options] [files]
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lots of instructions
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I can launch QtPass from Applications, and it can see the files in my .password-store, but clicking on Users gives "Unable to get list of available gpg keys". In Config->Programs I've selected "Use pass".

Any ideas?