getting closer to a working nix environment

flake.lock

@@ -0,0 +1,41 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1652776076,
+        "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1653117584,
+        "narHash": "sha256-5uUrHeHBIaySBTrRExcCoW8fBBYVSDjDYDU5A6iOl+k=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "f4dfed73ee886b115a99e5b85fdfbeb683290d83",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

shell.nix

@@ -1,5 +1,6 @@
-with import <nixpkgs> { };
-pkgs.mkShell {
+{ pkgs ? <nixpkgs> { } }:
+with pkgs;
+mkShell {
   name = "presenter-env";
 
   nativeBuildInputs = [
@@ -9,6 +10,7 @@ pkgs.mkShell {
     cmake
     extra-cmake-modules
     pkg-config
+    libsForQt5.wrapQtAppsHook
     # gccStdenv
     # stdenv
   ];
@@ -27,7 +29,14 @@ pkgs.mkShell {
     # ffmpeg-full
     # yt-dlp
   ];
-
+  
+  # This creates the proper qt env so that plugins are found right.
   shellHook = ''
+    setQtEnvironment=$(mktemp --suffix .setQtEnvironment.sh)
+    echo "shellHook: setQtEnvironment = $setQtEnvironment"
+    makeWrapper "/bin/sh" "$setQtEnvironment" "''${qtWrapperArgs[@]}"
+    sed "/^exec/d" -i "$setQtEnvironment"
+    source "$setQtEnvironment"
+  fish
   '';
 }