The useful clean-install test begins without local state, follows only published instructions, and ends at a specific observed output that can be repeated before every release.
Define the environment and finish line
Name the environment before running the test: operating-system image, architecture, runtime and package-manager versions, shell, network assumptions, and whether optional system tools are present. Use a fresh virtual machine, container, or disposable hosted runner that can be recreated from a checked-in definition. Do not mount the maintainer's home directory or reuse a package cache during the first pass. If the project claims support for two environment families, run the path in both rather than treating one success as coverage of the other.
Write one finish line that a newcomer can observe. It might be a command printing a known result, a server returning a documented response, or a library example producing a small deterministic artifact. The finish line is more precise than build succeeded. It includes installation, import or execution, configuration of a non-secret example, and visible output. Record time, commands, stdout, stderr, exit status, and the candidate commit.
Inspect what the package actually contains
Build the distributable artifact and list its contents before publishing it. Check that the license and notices are included, development fixtures and credentials are excluded, required data files are present, and entry points resolve after installation outside the repository checkout. Install from the built artifact rather than from a live working tree. That catches missing files masked by local imports and build configurations that accidentally depend on untracked state.
Then perturb the path deliberately. Try a missing optional dependency, a path containing spaces, an unset optional variable, and a second invocation against existing output. The purpose is not to promise universal compatibility. It is to distinguish supported behavior from a brittle happy path and to decide which conditions deserve an automated smoke test, a clearer error, or an explicit statement of non-support.
Convert the witness into a release gate
Place the clean-install definition and smoke command in the repository and run them in continuous integration at the versions the project claims to support. GitHub recommends repository guidance that helps contributors build, test, and propose changes, so keep local contribution commands aligned with the hosted checks. A contributor should be able to reproduce a failed gate without guessing at a private maintainer process.
Reality Contact, LLC uses this method for the free Repo Launch Record and reports the first observed blocker before proposing a rebuild. The buyer decides which environments become supported and owns all publishing credentials. A passing clean-install record covers the named revision, artifact, environment, and example. It does not establish security, long-term compatibility, package-registry availability, or fitness for every user.
Where the service stops
Reality Contact, LLC prepares repository code, factual inventories, documents, and test evidence but does not provide legal advice, choose a license for the buyer, certify security, promise community adoption, moderate the project indefinitely, or maintain releases after handoff. The buyer chooses the license and governance position, approves the supported environments and contribution policy, controls publication credentials, and decides whether and when to make the repository public. The service is software implementation and document preparation, and it does not replace legal review, security assessment, registry administration, project governance, or continuing maintenance. The buyer chooses all license and governance terms, controls repository and registry credentials, approves the supported environments, and makes every publication decision.
Sources: GitHub contributing-guide documentation; OpenSSF Best Practices program.