Shrink binary by replacing Helm engine dependency - #20
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digitalstudium merged 1 commit intoAug 1, 2026
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The Helm template engine was imported solely to borrow its funcMap for parse-time syntax validation, pulling in ~169 helm.sh/k8s.io packages and dominating the binary (~38 MB). Reimplement the same function set locally from Sprig plus no-op placeholders for Helm's own additions, matching helm.sh/helm/v3/pkg/engine.funcMap (v3.19.0). This drops all Helm/k8s dependencies and shrinks the linux/amd64 binary to ~5.5 MB. Add -trimpath to the goreleaser build for reproducible, path-free binaries, and add tests asserting every Helm/Sprig function name still validates.
DanielHabenicht
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As written in #16 (comment)
This would reduce the binary size substantially and allow for easier multi version support (and also adding support for helmfile syntax in a similar way).
Down side is that it has to be maintained separately instead of just using the dependeny.
I added
-trimpathto allow future builds to be identical wherever they are build (so sha's should be the same across different build devices)