Silence the scie-pants version warning when NO_SCIE_WARNING=1 (Cherry-pick of #19660) #19702
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Before this fix, #19654 was causing `pants ...` commands in the pants repo to explode and not work. This fixes it by silencing them in the pants repo, keying off the existing `NO_SCIE_WARNING=1` mechanism. Running scie-pants in the pants repo goes through a special bootstrap mechanism, that's bootstrapped outside the scie-pants processing on purpose. This in particular means that the scie-pants version check from #19600 / #19654 doesn't work, because it's not invoked via that mechanism. Fortunately, this can just be treated the same as the "am I running in scie-pants at all?" check, looking for the env var set by the pants repo bootstrapper. The version check has to be strict about the `SCIE_PANTS_VERSION` environment variable, and it cannot just do nothing when that's not set. The goal with this check is to help people using upgrade to scie-pants 0.9+ _before_ Pants 2.18 is released, because Pants 2.18 has a new distribution mechanism that's only supported by scie-pants 0.9+ (this is why we needed to land #19654 last minute, to be in Pants 2.17). scie-pants only sets the environment variable in version 0.9 too, so a user using scie-pants 0.8.0 will be running Pants 2.17 without setting `SCIE_PANTS_VERSION`, and so, to help them upgrade, we have to assume "doesn't exist" = "scie-pants is too old". The pants repo custom bootstrap doesn't set this env var, and hence used to fall into that trap.
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Aug 29, 2023
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Before this fix, #19654 was causing
pants ...commands in the pants repo to explode and not work. This fixes it by silencing them in the pants repo, keying off the existingNO_SCIE_WARNING=1mechanism.Running scie-pants in the pants repo goes through a special bootstrap mechanism, that's bootstrapped outside the scie-pants processing on purpose. This in particular means that the scie-pants version check from #19600 / #19654 doesn't work, because it's not invoked via that mechanism. Fortunately, this can just be treated the same as the "am I running in scie-pants at all?" check, looking for the env var set by the pants repo bootstrapper.
The version check has to be strict about the
SCIE_PANTS_VERSIONenvironment variable, and it cannot just do nothing when that's not set. The goal with this check is to help people using upgrade to scie-pants 0.9+ before Pants 2.18 is released, because Pants 2.18 has a new distribution mechanism that's only supported by scie-pants 0.9+ (this is why we needed to land #19654 last minute, to be in Pants 2.17). scie-pants only sets the environment variable in version 0.9 too, so a user using scie-pants 0.8.0 will be running Pants 2.17 without settingSCIE_PANTS_VERSION, and so, to help them upgrade, we have to assume "doesn't exist" = "scie-pants is too old". The pants repo custom bootstrap doesn't set this env var, and hence used to fall into that trap.