André Schröder b112b109af python3Packages.icalendar: fix build failure for python3.12 ...

Error message:

```
Executing pythonRuntimeDepsCheck
Checking runtime dependencies for icalendar-7.2.0-py3-none-any.whl
  - typing-extensions not installed
```

MWE flake.nix:

```
{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/0bb7ec54c8483066ec9d7720e780a5caa71f8612";

  outputs = { nixpkgs, ... }:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; };
    in {
      packages.${system} = {
        python312 = pkgs.python312Packages.icalendar;
        python312-fixed = pkgs.python312Packages.icalendar.overridePythonAttrs (old: {
          dependencies = old.dependencies ++ [ pkgs.python312Packages.typing-extensions ];
        });
        python313 = pkgs.python313Packages.icalendar;
        python314 = pkgs.python314Packages.icalendar;
      };
    };
}
```

Build it:

```
for package in python312 python312-fixed python313 python314; do
  if nix build --no-link ".#$package" >/dev/null 2>&1; then
    echo "$package: success"
  else
    echo "$package: failure"
  fi
done
```

Which prints:

```
python312: failure
python312-fixed: success
python313: success
python314: success
```

2026-07-10 19:13:23 +02:00

..

default.nix

python3Packages.icalendar: fix build failure for python3.12

2026-07-10 19:13:23 +02:00