{ lib, fetchFromGitHub, rustPlatform }: rustPlatform.buildRustPackage rec { pname = "fend"; version = "0.1.24"; src = fetchFromGitHub { owner = "printfn"; repo = pname; rev = "v${version}"; sha256 = "sha256-Oa/o2Jd0rf+fIVQCaCiSh+tI2KINh1Kx3NTVEULQlzI="; }; cargoSha256 = "sha256-iFGw5mkeRGiMWe5wcrEcmH0WlHJ8p1D0rf1mh+1Mo+w="; doInstallCheck = true; installCheckPhase = '' [[ "$($out/bin/fend "1 km to m")" = "1000 m" ]] ''; meta = with lib; { description = "Arbitrary-precision unit-aware calculator"; homepage = "https://github.com/printfn/fend"; license = licenses.mit; maintainers = with maintainers; [ djanatyn ]; }; }