build: modernize Nix base to nixos-25.11 and uv#308
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Bump the pinned nixpkgs from nixos-23.11 (2024) to nixos-25.11 and poetry2nix to a current revision. 25.11 still ships python310 natively, so both the 3.12 and 3.10 poetry2nix dev environments build without extra inputs. Adjust for nixpkgs changes: gitAndTools.pre-commit -> top-level pre-commit (+ git), and add a types-typed-ast placeholder override (25.11 removed the package poetry2nix's mypy override references; mypy is a wheel here so it is unused). This is an isolated stepping stone toward removing poetry2nix: a current Nix base whose poetry2nix understands riscv64, which later lets the mypy<1.19 pin be dropped and the project move to uv. Signed-off-by: Mike Fiedler <miketheman@gmail.com>
Replace poetry2nix with a plain nix-shell toolchain: nixos-25.11 provides python 3.10/3.12 + uv 0.9.30 + pre-commit + nixpkgs-fmt, and uv manages dependencies (uv.lock) directly. pyproject.toml moves to PEP 621 + PEP 735 dependency-groups with the uv_build backend; Makefile drives tools via uv run. Remove poetry.lock, poetry.toml, and the py310/ duplicate project. Dropping poetry2nix also removes the riscv64 wheel-eval limitation, so mypy is no longer pinned (<1.19) and resolves to current (2.1.0). Validated in a nixos VM: nix-shell provides uv 0.9.30; `make tests` (lint + types + unit, 100% coverage) passes on Python 3.12, and the minimum-version floor (openapi-core 0.19.1 / pyramid 1.10.7) plus examples pass on 3.10. Signed-off-by: Mike Fiedler <miketheman@gmail.com>
See https://github.com/nix-community/nixpkgs-fmt#nixpkgs-fmt---nix-code-formatter-for-nixpkgs Signed-off-by: Mike Fiedler <miketheman@gmail.com>
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Oh, this is perfect, I can take it from here! |
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Continued in #309. |
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Modernize the nix environment and replace poetry2nix with uv
This probably isn't 100% complete but I wanted to share what I had so far.