plik,plikd: init at 1.3.1

The client and the servers are separated so that a simple user just gets
the necessary binary.

Currently the server frontend has a very old build, I could not build
this asset myself, so for the moment I simply extracted it from the
binary release of the project.

Once this build procedure will have been updated I will transition to a
full build

pkgs/servers/plik/default.nix

@@ -0,0 +1,25 @@
+{ lib, fetchurl, makeWrapper, runCommand, callPackage }:
+
+let
+  version = "1.3.1";
+
+  programs = callPackage ./programs.nix {};
+
+  webapp = fetchurl {
+    url = "https://github.com/root-gg/plik/releases/download/${version}/plik-${version}-linux-amd64.tar.gz";
+    sha256 = "KN6cp29KKdGamYnfL3jYltx0EDx6syDPfV0jShOk7Zw=";
+  };
+
+in {
+
+  inherit (programs) plik plikd-unwrapped;
+
+  plikd = runCommand "plikd-${version}" { nativeBuildInputs = [ makeWrapper ]; } ''
+    mkdir -p $out/libexec/plikd/{bin,webapp} $out/bin
+    tar xf ${webapp} plik-${version}-linux-amd64/webapp/dist/
+    mv plik-*/webapp/dist $out/libexec/plikd/webapp
+    cp ${programs.plikd-unwrapped}/bin/plikd $out/libexec/plikd/bin/plikd
+    makeWrapper $out/libexec/plikd/bin/plikd $out/bin/plikd \
+      --run "cd $out/libexec/plikd/bin"
+  '';
+}