Avoid updating target file mtime in 'generate' #3980
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If the target file exists on disk already, compare its contents to the generated source in memory: only update the target file on disk if the contents differ or if the target file is missing. This should allow build tools downstream of sqlc to make conditional decisions based on whether the generated code files have been updated (e.g. mockgen).
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@kyleconroy small nudge here: is this a change that you're okay with? |
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Seems like a good idea and pretty cheap to do. I'll hold off on a review until @kyleconroy weighs in. |
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If the target file exists on disk already, compare its contents to the generated source in memory: only update the target file on disk if the contents differ or if the target file is missing.
This should allow build tools downstream of sqlc to make conditional decisions based on whether the generated code files have been updated (e.g. mockgen).