How to install Erlang with Observer?

shanesveller · December 5, 2019, 7:33pm

On OSX I also need wxmac, and I believe for Linux you want one of the wxGTK packages:

NixOS/nixpkgs/blob/4de58b617bf52509cdfa7946f46505166f0bc3de/pkgs/development/interpreters/erlang/generic-builder.nix#L33-L35


      
          assert wxSupport -> (if stdenv.isDarwin
            then wxmac != null
            else libGL != null && libGLU != null && wxGTK != null && xorg != null);

github.com

NixOS/nixpkgs/blob/4de58b617bf52509cdfa7946f46505166f0bc3de/pkgs/development/interpreters/erlang/generic-builder.nix#L21


      
          , sha256 ? null
          , rev ? "OTP-${version}"
          , src ? fetchFromGitHub { inherit rev sha256; owner = "erlang"; repo = "otp"; }
          , enableHipe ? true
          , enableDebugInfo ? false
          , enableThreads ? true
          , enableSmpSupport ? true
          , enableKernelPoll ? true
          , javacSupport ? false, javacPackages ? [ openjdk ]
          , odbcSupport ? false, odbcPackages ? [ unixODBC ]
          , wxSupport ? true, wxPackages ? [ libGL libGLU wxGTK xorg.libX11 ]
          , preUnpack ? "", postUnpack ? ""
          , patches ? [], patchPhase ? "", prePatch ? "", postPatch ? ""
          , configureFlags ? [], configurePhase ? "", preConfigure ? "", postConfigure ? ""
          , buildPhase ? "", preBuild ? "", postBuild ? ""
          , installPhase ? "", preInstall ? "", postInstall ? ""
          , installTargets ? "install install-docs"
          , checkPhase ? "", preCheck ? "", postCheck ? ""
          , fixupPhase ? "", preFixup ? "", postFixup ? ""
          , meta ? {}
          }:

These appear to already be expressed in the nixpkgs definitions:

github.com

NixOS/nixpkgs/blob/076860e0340a5e4a909b9a710e186508b14d1c90/pkgs/top-level/beam-packages.nix#L55-L57


      
          erlangR22 = lib.callErlang ../development/interpreters/erlang/R22.nix {
            wxGTK = wxGTK30;
          };

However, they’re not defined as propagatedBuildInputs in the first link, so you have to also name the wx package separately when installing in order to have it available at runtime.

I don’t have ready access to a Nix-enabled desktop Linux host right now to test for myself, but I think that should let you move forward. Good luck!