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Fri, 3 Nov 2023 13:08:16 +0000 (UTC) Date: Fri, 3 Nov 2023 14:08:16 +0100 From: Tomas Volf <~@wolfsden.cz> To: Suhail <suhail@bayesians.ca> Cc: Simon Tournier <zimon.toutoune@gmail.com>, Felix Lechner via <help-guix@gnu.org>, Julien Lepiller <julien@lepiller.eu>, Felix Lechner <felix.lechner@lease-up.com> Subject: Re: Turning off tests leads to a different store item Message-ID: <ZUTwwCt2UoqfUJ03@ws> Mail-Followup-To: Suhail <suhail@bayesians.ca>, Simon Tournier <zimon.toutoune@gmail.com>, Felix Lechner via <help-guix@gnu.org>, Julien Lepiller <julien@lepiller.eu>, Felix Lechner <felix.lechner@lease-up.com> References: <87r0l818ka.fsf@> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="IYSNTxUgeo08UfJU" Content-Disposition: inline In-Reply-To: <87r0l818ka.fsf@> Received-SPF: none client-ip=37.205.8.62; envelope-from=ws@wolfsnet.cz; helo=wolfsden.cz X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_PASS=-0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, UNPARSEABLE_RELAY=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Fri, 03 Nov 2023 16:16:30 -0400 X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <help-guix.gnu.org> List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-guix>, <mailto:help-guix-request@gnu.org?subject=unsubscribe> List-Archive: <https://lists.gnu.org/archive/html/help-guix> List-Post: <mailto:help-guix@gnu.org> List-Help: <mailto:help-guix-request@gnu.org?subject=help> List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-guix>, <mailto:help-guix-request@gnu.org?subject=subscribe> Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: help-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Queue-Id: ED05F5C90F X-Migadu-Scanner: mx12.migadu.com X-Migadu-Spam-Score: -7.38 X-Spam-Score: -7.38 X-TUID: 6U3rNlAT1nJF --IYSNTxUgeo08UfJU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2023-11-02 15:25:33 +0000, Suhail wrote: > [..] >=20 > The hypothetical test derivation leaves the build artifact unchanged, > but does communicate some "side" information. It's like a fixed-output > derivation carrying some metadata (further elaboration below). I am not aware of any, but I wonder if there are test suites that actually modify the built binary, for example by patching a bool flag `was_tested' t= o #t. Runtime behavior could then differ based on the flag. Do you have some ide= as how to detect/deal with this? T. --=20 There are only two hard things in Computer Science: cache invalidation, naming things and off-by-one errors. --IYSNTxUgeo08UfJU Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEt4NJs4wUfTYpiGikL7/ufbZ/wakFAmVE8MAACgkQL7/ufbZ/ wamT4xAAswqfSvPQj2ubCziLW7pfLkoMzIXxmrvzPyHz5yF58aJr4tLUrUZpRNDa 6KKjF9KPBM7hWKg+3k++lvCpBYpbcVrqO7i5FWPGUU2Q/i54Jk5eYTJmRCorOkPp 1EOU0tUjTEHuWy7RsO+NBmSx3V+wzhg0PU0vKBMCDIsYFuLJTH4nDU/aX4J8jqRv B+TpgWLW4OayX925Ml4SCL1ybfKGB1QGaJOIr2em3PL4n7VaMC+UNS/IU0ywcWVt +pbEFgs+wytacbNYCW8A3rGCsr6H49C5v1OHGqwucpYyjT8Jw+KTKqZbzpDXN1Mw 0cJ2Ax2mk+YDbWJICf4Pn+U6gvjKvMKy/C7uCfKWF+B9tRRjKnxZ3mKmX9n6v2Jt 32sGmcdrLz6+JZujvVHGYtDxNjImGfKqFsLdc2SFXcbYiEHVfEaA0uJ7Z4SGyaU3 pTC0pnqIIdFMi2F28MNkToExySUk0cBTecA/jpvNpsFvWz00HBqQChxuUqrP8d7v ERuhn96hPak7QGNyU3A1C32zv42JW8d7DuHh+kkdOvFbhWH6VXH+SfAo4yqcZN0S q1f6Q6tUzBmDb8/Ic99KcC0DM7zXkIF6poqgxpy9noZArGs9nqP7XlmyVkuWwydQ n/809Pema2z/w8/PWlp/GHWgTxFcyZTz8RU427eKFvIoCCb53vw= =zZH9 -----END PGP SIGNATURE----- --IYSNTxUgeo08UfJU--