Flake lock file updates:

• Updated input 'nixpkgs':
'github:nixos/nixpkgs/c2a03962b8e24e669fb37b7df10e7c79531ff1a4' (2025-06-03)
→ 'github:nixos/nixpkgs/c87b95e25065c028d31a94f06a62927d18763fdf' (2025-07-19)
• Updated input 'pyproject-nix':
'github:nix-community/pyproject.nix/af4c3ccf8cffcd49626b0455defb0f6b22cc1910' (2025-03-27)
→ 'github:nix-community/pyproject.nix/cac90713492f23be5f1072bae88406890b9c68f6' (2025-07-21)

closes https://github.com/pvsr/qbpm/issues/39

this was a convention that probably only I used. I noticed it breaks
when there's a broken symlink in conf.d and decided to remove it. It
makes more sense to just source the files from the main config.py.

Flake lock file updates:

• Updated input 'flake-utils':
'github:numtide/flake-utils/b1d9ab70662946ef0850d488da1c9019f3a9752a?narHash=sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ%3D' (2024-03-11)
→ 'github:numtide/flake-utils/c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a?narHash=sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ%3D' (2024-09-17)
• Updated input 'nixpkgs':
'github:nixos/nixpkgs/57610d2f8f0937f39dbd72251e9614b1561942d8?narHash=sha256-yZKhxVIKd2lsbOqYd5iDoUIwsRZFqE87smE2Vzf6Ck0%3D' (2024-05-31)
→ 'github:nixos/nixpkgs/4c2fcb090b1f3e5b47eaa7bd33913b574a11e0a0?narHash=sha256-/uilDXvCIEs3C9l73JTACm4quuHUsIHcns1c%2BcHUJwA%3D' (2024-10-18)
• Added input 'pyproject-nix':
'github:nix-community/pyproject.nix/76ae89817a8d0765b392a559962ae5672c4b7d53?narHash=sha256-98QV7%2B3okYxhCg8QEovV%2BiFHZ7mYquCVuzLdWrf//Ko%3D' (2024-10-17)
• Added input 'pyproject-nix/lix-unit':
'github:adisbladis/lix-unit/59c489dbc5b27a83fadc94fde2c2b69abb4c0e80?narHash=sha256-scZo6AyJTxTK9wYW0HmWDzLxVxOoFr7/XkIVJCmmOe4%3D' (2024-09-26)
• Added input 'pyproject-nix/lix-unit/mdbook-nixdoc':
follows 'pyproject-nix/mdbook-nixdoc'
• Added input 'pyproject-nix/lix-unit/nix-github-actions':
follows 'pyproject-nix/nix-github-actions'
• Added input 'pyproject-nix/lix-unit/nixpkgs':
follows 'pyproject-nix/nixpkgs'
• Added input 'pyproject-nix/lix-unit/treefmt-nix':
follows 'pyproject-nix/treefmt-nix'
• Added input 'pyproject-nix/mdbook-nixdoc':
'github:adisbladis/mdbook-nixdoc/d6a71b114b9221c0b4f20d31b81766d072cc26be?narHash=sha256-smf0VmxGbjJDZqKvxxG3ZVqubgbVwAWG26wPo%2BBT/A0%3D' (2024-02-20)
• Added input 'pyproject-nix/mdbook-nixdoc/nix-github-actions':
follows 'pyproject-nix/nix-github-actions'
• Added input 'pyproject-nix/mdbook-nixdoc/nixpkgs':
follows 'pyproject-nix/nixpkgs'
• Added input 'pyproject-nix/nix-github-actions':
'github:nix-community/nix-github-actions/622f829f5fe69310a866c8a6cd07e747c44ef820?narHash=sha256-uPlLYH2S0ACj0IcgaK9Lsf4spmJoGejR9DotXiXSBZQ%3D' (2024-07-04)
• Added input 'pyproject-nix/nix-github-actions/nixpkgs':
follows 'pyproject-nix/nixpkgs'
• Added input 'pyproject-nix/nixpkgs':
follows 'nixpkgs'
• Added input 'pyproject-nix/treefmt-nix':
follows 'treefmt-nix'