nix: add script to update qmake symlinks

Signed-off-by: Patrizio Bekerle <[email protected]>

scripts/nix-update-qmake-symlinks.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+###
+# This script updates the symlinks to the qmake binaries in the nix store
+# It will be executed by direnv when entering the project directory via the shell.nix
+# The symlinks are to be used in Qt Creator and CLion
+###
+
+# With direnv, the current directory is the project directory
+BIN_DIR="$(pwd)/bin"
+
+mkdir -p "${BIN_DIR}"
+ln -sf "$(which qmake)" "${BIN_DIR}/qmake6" && "${BIN_DIR}/qmake6" --version
+# Run a pure shell so the shell.nix will not be loaded again by direnv
+nix-shell --pure -p which libsForQt5.qt5.qtbase --run "ln -sf \$(which qmake | tail -n1) \$PWD/bin/qmake5" && "${BIN_DIR}/qmake5" --version

shell.nix

@@ -54,6 +54,6 @@ pkgs.mkShell {
     ];
 
   shellHook = ''
-    echo "qmake:  $(qmake  --version)"
+    ./scripts/nix-update-qmake-symlinks.sh
   '';
 }