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konsti 6e5479f5db
Optimize flattening in apache airflow workspace (#11313) 
## Motivation

No-op `uv lock` in apache airflow
(891c67f210ab7c877d1f00ea6ea3d3cdbb0e96ef) is slow, which makes `uv run`
slow, too.

Reference project:

```
$ hyperfine "uv run python -c \"print('hi')\""
Benchmark 1: uv run python -c "print('hi')"
Time (mean ± σ):      16.3 ms ±   1.5 ms    [User: 9.8 ms, System: 6.4 ms]
Range (min … max):    13.0 ms …  20.0 ms    186 runs
```

Apache airflow before:

```
$ hyperfine "uv run python -c \"print('hi')\""
Benchmark 1: uv run python -c "print('hi')"
Time (mean ± σ):     161.0 ms ±   5.2 ms    [User: 135.3 ms, System: 24.1 ms]
Range (min … max):   155.0 ms … 176.3 ms    18 runs
```

## Optimization

`FlatRequiresDist::from_requirements` is taking 50% of main thread
runtime.

Before:


![image](https://github.com/user-attachments/assets/10ea76eb-d1e9-477c-b400-39e653eb8f3a)

After both commits:


![image](https://github.com/user-attachments/assets/5c578ff6-f80b-46bb-9b5f-8be8435c3d85)

Apache airflow after the first commit:

```
$ hyperfine "uv-profiling run python -c \"print('hi')\""
Benchmark 1: uv-profiling run python -c "print('hi')"
  Time (mean ± σ):     122.3 ms ±   5.4 ms    [User: 96.1 ms, System: 24.7 ms]
  Range (min … max):   114.0 ms … 133.2 ms    23 runs
```

Apache airflow after the second commit:

```
$ hyperfine "uv-profiling run python -c \"print('hi')\""
Benchmark 1: uv-profiling run python -c "print('hi')"
  Time (mean ± σ):     108.5 ms ±   3.4 ms    [User: 83.2 ms, System: 24.2 ms]
  Range (min … max):   103.6 ms … 119.9 ms    28 runs
```
2025-02-07 17:08:40 -05:00
..
src Optimize flattening in apache airflow workspace (#11313) 2025-02-07 17:08:40 -05:00
Cargo.toml Remove warnings for missing lower bounds (#11195) 2025-02-03 16:03:31 -06:00