pantsbuild / pants / 25404098001

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backend/go: deduplicate third-party module downloads across go.mods (#23261)

Third-party Go module analysis is now deduplicated across
`go.mod` files.

Previously, a module required by N `go.mod` files was downloaded
and analyzed N times, causing O(N*M) downloads and significant
memory overhead in monorepos with many overlapping `go.mod` files.

Partially addresses #20274.

68 of 70 new or added lines in 2 files covered. (97.14%)

92206 of 99237 relevant lines covered (92.91%)

4.04 hits per line