Remove use of environment python

howdy-gtk/bin/howdy-gtk.in

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-env python3 "@script_path@" "$@"
+/usr/bin/python3 "@script_path@" "$@"

howdy-gtk/src/init.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 # Opens auth ui if requested, otherwise starts normal ui
 import sys
 

howdy/src/bin/howdy.in

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-env python3 "@script_path@" "$@"
+/usr/bin/python3 "@script_path@" "$@"

howdy/src/cli.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 # CLI directly called by running the howdy command
 
 # Import required modules

howdy/src/compare.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 # Compare incoming video with known faces
 # Running in a local python instance to get around PATH issues
 

howdy/src/pam/main.cc

@@ -47,7 +47,7 @@
 const auto DEFAULT_TIMEOUT =
     std::chrono::duration<int, std::chrono::milliseconds::period>(100);
 const auto MAX_RETRIES = 5;
-const auto PYTHON_EXECUTABLE = "python3";
+const auto PYTHON_EXECUTABLE = "/usr/bin/python3";
 
 #define S(msg) gettext(msg)