livebook: init at 0.9.2

This commit adds a package for the [livebook](https://livebook.dev) interactive
Elixir notebook environment.

Created with inspiration from
https://github.com/hauleth/nix-elixir/blob/master/pkgs/livebook.nix

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/servers/web-apps/livebook/default.nix

@@ -0,0 +1,42 @@
+{ lib, beamPackages, makeWrapper, rebar3, elixir, erlang, fetchFromGitHub }:
+beamPackages.mixRelease rec {
+  pname = "livebook";
+  version = "0.9.2";
+
+  inherit elixir;
+
+  buildInputs = [ erlang ];
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  src = fetchFromGitHub {
+    owner = "livebook-dev";
+    repo = "livebook";
+    rev = "v${version}";
+    hash = "sha256-khC3gtRvywgAY6qHslZgAV3kmziJgKhdCB8CDg/HkIU=";
+  };
+
+  mixFodDeps = beamPackages.fetchMixDeps {
+    pname = "mix-deps-${pname}";
+    inherit src version;
+    sha256 = "rwWGs4fGeuyV6BBFgCyyDwKf/YLgs1wY0xnHYy8iioE=";
+  };
+
+  installPhase = ''
+    mix escript.build
+    mkdir -p $out/bin
+    mv ./livebook $out/bin
+
+    wrapProgram $out/bin/livebook \
+      --prefix PATH : ${lib.makeBinPath [ elixir ]} \
+      --set MIX_REBAR3 ${rebar3}/bin/rebar3
+  '';
+
+  meta = with lib; {
+    license = licenses.asl20;
+    homepage = "https://livebook.dev/";
+    description = "Automate code & data workflows with interactive Elixir notebooks";
+    maintainers = with maintainers; [ munksgaard ];
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -3620,6 +3620,8 @@ with pkgs;
 
   lesspass-cli = callPackage ../tools/security/lesspass-cli { };
 
+  livebook = callPackage ../servers/web-apps/livebook { };
+
   lsix = callPackage ../tools/graphics/lsix { };
 
   mdr = callPackage ../tools/misc/mdr { };