cheekybits/genny

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1717 stars · 126 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Genny is a code-generation tool that provides generics-like functionality for Go before native generics existed. It processes valid Go source files, replacing generic type placeholders with specific types to generate type-specific code via the `genny gen` command and `go generate`.

Use cases

• generate type-specific Go code from generic templates
• create typed collections like maps and sets for multiple Go types
• integrate generics-style code generation with go generate
• generate permutations of generic code for multiple type combinations
• generate code for all built-in Go types using BUILTINS wildtype

When to choose

• you maintain a Go codebase targeting versions before Go 1.18 generics
• you need type-safe data structures across many built-in types without hand-writing each
• you want generic code that still compiles and tests as normal Go

When to avoid

• you are on Go 1.18 or later, which has native generics
• you need runtime generics rather than compile-time code generation
• you want an actively developed tool - the project has been in maintenance since 2021

Facets

cli-tool · maturity maintenance

compiler developer-tools developer-tools programming-languages go cli cross-platform generics go-generate code-generation pre-generics-go automation

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