typora: reinit at 1.7.5

typora was removed in bd763298ed because
it failed to run. Running it inside an FHS environment solves the issue.

pkgs/applications/editors/typora/default.nix

@@ -0,0 +1,104 @@
+{ stdenv
+, fetchurl
+, dpkg
+, lib
+, glib
+, nss
+, nspr
+, at-spi2-atk
+, cups
+, dbus
+, libdrm
+, gtk3
+, pango
+, cairo
+, xorg
+, libxkbcommon
+, mesa
+, expat
+, alsa-lib
+, buildFHSEnv
+}:
+
+let
+  pname = "typora";
+  version = "1.7.5";
+  src = fetchurl {
+    url = "https://download.typora.io/linux/typora_${version}_amd64.deb";
+    hash = "sha256-4Q+fx1kNu98+nxnI/7hLhE6zOdNsaAiAnW6xVd+hZOI=";
+  };
+
+  typoraBase = stdenv.mkDerivation {
+    inherit pname version src;
+
+    nativeBuildInputs = [ dpkg ];
+
+    dontConfigure = true;
+    dontBuild = true;
+
+    installPhase = ''
+      runHook preInstall
+      mkdir -p $out/bin $out/share
+      mv usr/share $out
+      ln -s $out/share/typora/Typora $out/bin/Typora
+      runHook postInstall
+    '';
+  };
+
+  typoraFHS = buildFHSEnv {
+    name = "typora-fhs";
+    targetPkgs = pkgs: (with pkgs; [
+      typoraBase
+      udev
+      alsa-lib
+      glib
+      nss
+      nspr
+      atk
+      cups
+      dbus
+      gtk3
+      libdrm
+      pango
+      cairo
+      mesa
+      expat
+      libxkbcommon
+    ]) ++ (with pkgs.xorg; [
+      libX11
+      libXcursor
+      libXrandr
+      libXcomposite
+      libXdamage
+      libXext
+      libXfixes
+      libxcb
+    ]);
+    runScript = ''
+      Typora $*
+    '';
+  };
+
+in stdenv.mkDerivation {
+  inherit pname version;
+
+  dontUnpack = true;
+  dontConfigure = true;
+  dontBuild = true;
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    ln -s ${typoraFHS}/bin/typora-fhs $out/bin/typora
+    ln -s ${typoraBase}/share/ $out
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "A markdown editor, a markdown reader";
+    homepage = "https://typora.io/";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ jensbin npulidomateo ];
+    platforms = [ "x86_64-linux" ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -34434,6 +34434,8 @@ with pkgs;
 
   synfigstudio = callPackage ../applications/graphics/synfigstudio { };
 
+  typora = callPackage ../applications/editors/typora { };
+
   taxi = callPackage ../applications/networking/ftp/taxi { };
 
   taxi-cli = with python3Packages; toPythonApplication taxi;