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Change i686-pc-windows-msvc from Tier 1 with host tools => Tier 1 without host tools - #3999

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Change i686-pc-windows-msvc from Tier 1 with host tools => Tier 1 without host tools#3999
jieyouxu wants to merge 6 commits into
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@jieyouxu

@jieyouxu jieyouxu commented Aug 15, 2026

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Summary

This RFC proposes to drop i686-pc-windows-msvc host tools, i.e.

  • Before: Tier 1 with host tools
  • After: Tier 1 without host tools

Additional context

This was discussed in:

This RFC was drafted by @workingjubilee, I only did some minor editorial/logistical edits.


cc @rust-lang/compiler
cc *-pc-windows-msvc target maintainers: @ChrisDenton @dpaoliello @Fulgen301 @lambdageek @sivadeilra @wesleywiser

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@jieyouxu jieyouxu added the T-compiler Relevant to the compiler team, which will review and decide on the RFC. label Aug 15, 2026
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jieyouxu marked this pull request as ready for review August 15, 2026 08:04
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Normally we start RFC FCPs only after giving some time for discussions, but for this case I'd like to start the process early before we run into more obscure i686 msvc issues.

@rfcbot fcp merge compiler

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rust-rfcbot commented Aug 15, 2026

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@jieyouxu has proposed to merge this. The next step is review by the rest of the tagged team members:

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.

@rust-rfcbot rust-rfcbot added proposed-final-comment-period Currently awaiting signoff of all team members in order to enter the final comment period. disposition-merge This RFC is in PFCP or FCP with a disposition to merge it. labels Aug 15, 2026
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disposition-merge This RFC is in PFCP or FCP with a disposition to merge it. proposed-final-comment-period Currently awaiting signoff of all team members in order to enter the final comment period. T-compiler Relevant to the compiler team, which will review and decide on the RFC.

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