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Tracking Issue for -Z remap-cwd-prefix #89434

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Tracking Issue for -Z remap-cwd-prefix#89434
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A-CLIArea: Command-line interface (CLI) to the compilerA-path-remappingArea: path remapping, --remap-path-prefix, --remap-cwd-prefix, --remap-diagnostics-scope etc.A-reproducibilityArea: Reproducible / deterministic buildsC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCS-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

Description

@ehuss
ehuss
opened on Oct 1, 2021

This is a tracking issue for -Z remap-cwd-prefix which rewrites absolute paths in the current directory to the given value.

About tracking issues

Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.
A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.

Unresolved Questions

  • What is the relationship with RFC 3127?
  • Will this always be defined to be the same as --remap-path-prefix=$(pwd)=VALUE? That is, what gets remapped? Debug info, backtraces, compiler macros, coverage data, etc? What will happen if RFC 3127 results in separate mapping flags?
  • How does this interact with --remap-path-scope?

Implementation history

Activity

  1. ehuss
    added
    T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
    C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFC
    A-reproducibilityArea: Reproducible / deterministic builds
    on Oct 1, 2021

  2. fangism commented on Nov 1, 2021

    @fangism
    fangism
    on Nov 1, 2021

    -Zremap-cwd-prefix=. has been working well for me. We no longer see build environment paths in the strings of the resulting crates and executables.

  3. cristifalcas commented on Jul 20, 2022

    @cristifalcas
    cristifalcas
    on Jul 20, 2022

    When will this go to stable flags?

  4. workingjubilee
    added
    A-CLIArea: Command-line interface (CLI) to the compiler
    on Mar 5, 2023
  5. jieyouxu
    added
    A-path-remappingArea: path remapping, --remap-path-prefix, --remap-cwd-prefix, --remap-diagnostics-scope etc.
    S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.
    on Mar 23, 2025
  6. JonathanBrouwer
    added 2 commits that reference this issue on Jun 12, 2026

    Rollup merge of rust-lang#157348 - ashi009:remap-cwd-prefix-increment…

    431b5d1

    Rollup merge of rust-lang#157348 - ashi009:remap-cwd-prefix-increment…

    c756ac4
  7. rust-timer
    added a commit that references this issue on Jun 13, 2026

    Unrolled build for #157348

    45f652f
  8. pull
    added a commit that references this issue on Jun 13, 2026

    Rollup merge of #157348 - ashi009:remap-cwd-prefix-incremental, r=dav…

    6a7fc27
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    A-CLIArea: Command-line interface (CLI) to the compilerA-path-remappingArea: path remapping, --remap-path-prefix, --remap-cwd-prefix, --remap-diagnostics-scope etc.A-reproducibilityArea: Reproducible / deterministic buildsC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCS-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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