NIX: flake.nix for development environment

.direnv/bin/nix-direnv-reload

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+#!/usr/bin/env bash
+set -e
+if [[ ! -d "/Users/andrew/personal/Projects/C/image_processor" ]]; then
+  echo "Cannot find source directory; Did you move it?"
+  echo "(Looking for "/Users/andrew/personal/Projects/C/image_processor")"
+  echo 'Cannot force reload with this script - use "direnv reload" manually and then try again'
+  exit 1
+fi
+
+# rebuild the cache forcefully
+_nix_direnv_force_reload=1 direnv exec "/Users/andrew/personal/Projects/C/image_processor" true
+
+# Update the mtime for .envrc.
+# This will cause direnv to reload again - but without re-building.
+touch "/Users/andrew/personal/Projects/C/image_processor/.envrc"
+
+# Also update the timestamp of whatever profile_rc we have.
+# This makes sure that we know we are up to date.
+touch -r "/Users/andrew/personal/Projects/C/image_processor/.envrc" "/Users/andrew/personal/Projects/C/image_processor/.direnv"/*.rc

.direnv/nix-profile-25.11-dwh1bd8g809r0kgr

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+/nix/store/yy3zc65ij95wfnap3zqcr44kc4wzwlbq-nix-shell-env