rust-lang/project-const-generics

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Is rust-lang/project-const-generics beginner-friendly?

We have not seen enough recent pull requests from outside contributors to rust-lang/project-const-generics to say how often they are merged. 1 beginner-friendly issue is open now.

Stars: 54
Forks: 11
Open beginner issues: 1
Indexed issues: 74

Dominant language: No language data
License: Apache-2.0
Last GitHub push: Oct 2, 2026
Latest indexed: Sep 21, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

How to contribute to rust-lang/project-const-generics

There is no contributing guide, so start from the README and a few recently merged pull requests to see how changes are proposed.
Read its code of conduct: it covers issues and pull requests as well as chat.
Your contributions will be published under the project's Apache-2.0 license.
Pick the open beginner-friendly issue below and comment that you want to work on it before you start.

Beginner friendly Everything

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Issues somebody may already be working on are listed last. List everything by date

[GCA Experience Report]: Supposedly working `gca_min_const_items` snippet from the 2026-10-2 blog post does not compile
Open
- Is something wrong?
A-gca C-experience-report

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

rust-lang/project-const-generics#124 · 1 comment · Opened Oct 26, 2026
semver woes of defaulted assoc consts and dyn compatibility
Open
- Is something wrong?
Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#122 · Opened Sep 20, 2026
Provide a way to have better const generics compile error messages for std/core
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/project-const-generics#119 · Opened Sep 1, 2026
mgca rigidity of aliases in paramenv
Open
- Is something wrong?
Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#118 · Opened Jul 17, 2026
[Goal]: remove `ConstEvaluatable` clauses
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#109 · Opened Apr 15, 2026
[Goal]: mgca variant with no syntax questions
May be free again @khyperia claimed this 136 days ago, and no pull request is open. Open
- Is something wrong?
C-goal

rust-lang/project-const-generics#108 · 1 comment · 1 assignee · Opened Apr 14, 2026
[Goal]: macros in generic arg position should work for consts
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/project-const-generics#107 · Opened Apr 14, 2026
[Work Item]: Check for trivial bounds before evaluating const patterns
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/project-const-generics#106 · Opened Apr 13, 2026
[Work Item]: Use type system normalization for const patterns
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/project-const-generics#105 · Opened Apr 13, 2026
[Work Item]: Figure out variance for generic_const_parameter_types
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#103 · Opened Apr 4, 2026
[Work Item]: ConstParamTy should require sync to avoid that one soundness bug?
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 15/100

rust-lang/project-const-generics#102 · Opened Apr 4, 2026
[Work Item]: Figure out safety invariants/privacy interactions with mGCA
May be free again @BoxyUwU claimed this 212 days ago, and no pull request is open. Open
- Is something wrong?
C-work-item

rust-lang/project-const-generics#99 · 1 assignee · Opened Apr 4, 2026
[Work Item]: check trivial bounds before evaluation for GCA
May be free again @zedddie claimed this 154 days ago, and no pull request is open. Open
- Is something wrong?
C-work-item

rust-lang/project-const-generics#97 · 3 comments · 1 assignee · Opened Apr 4, 2026
[Work Item]: make wf check lint instead of hard error on diverging const items
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#96 · Opened Apr 4, 2026
[Work Item]: min_adt_const_params RFC
May be free again @BoxyUwU claimed this 212 days ago, and no pull request is open. Open
- Is something wrong?
C-work-item

rust-lang/project-const-generics#95 · 1 assignee · Opened Apr 4, 2026
[Work Item]: upstream adt const params lang meeting docs to dev guide
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/project-const-generics#94 · Opened Apr 4, 2026
[Work Item]: update HIR ty lowering to handle ambiguously kinded type relative paths
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 30/100

rust-lang/project-const-generics#93 · Opened Apr 4, 2026
[Work Item]: add Res::PerNs
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 15/100

rust-lang/project-const-generics#92 · Opened Apr 4, 2026
[Work Item]: Don't evalaute const patterns which syntactically use generics
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/project-const-generics#89 · Opened Apr 4, 2026
[Work Item]: resolve IATs during trait solving not lowering
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#88 · Opened Apr 4, 2026
[Work Item]: associated const/typeconst in typens under mgca
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#87 · Opened Apr 4, 2026
[Work Item]: lint on match arms which are uninhabited
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#86 · Opened Apr 4, 2026
[Work Item]: share HIR repr between const args and body exprs
May be free again @BoxyUwU claimed this 212 days ago, and no pull request is open. Open
- Is something wrong?
C-work-item

rust-lang/project-const-generics#85 · 1 assignee · Opened Apr 4, 2026
[Work Item]: AliasConstKind::Literal
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/project-const-generics#84 · Opened Apr 4, 2026
[Work Item]: support field projection exprs
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#83 · Opened Apr 4, 2026
[Work Item]: mgca handle non exhaustive adts in struct exprs
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/project-const-generics#81 · Opened Apr 4, 2026
[Work Item]: struct exprs check privacy of adt
Open
- Is something wrong?
C-work-item

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/project-const-generics#80 · Opened Apr 4, 2026
[Work Item]: replace unsized_const_params
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#79 · Opened Apr 4, 2026
[Work Item]: GCA implement const items as direct const args
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#76 · Opened Apr 4, 2026
[Work Item]: Use-site WF checks in GCA
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#75 · 1 comment · Opened Apr 4, 2026
[Work Item]: Non-fatal const eval errors
Open
- Is something wrong?
C-work-item

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#73 · Opened Apr 4, 2026
[Goal]: Cleanup const patterns
Open
- Is something wrong?
C-goal

Difficulty 4/5 3-5 days Newbie friendliness 20/100

rust-lang/project-const-generics#72 · Opened Apr 4, 2026
[Goal]: inherent_associated_types
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#71 · Opened Apr 4, 2026
[Goal]: associated_type_defaults
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#70 · Opened Apr 4, 2026
[Goal]: generic_const_items
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#69 · Opened Apr 4, 2026
[Goal]: opaque consts
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#68 · Opened Apr 4, 2026
[Goal]: generic_arg_path
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#67 · Opened Apr 4, 2026
[Goal]: argument position const generics
May be free again @bit-aloo claimed this 77 days ago, and no pull request is open. Open
- Is something wrong?
C-goal

rust-lang/project-const-generics#66 · 3 comments · 1 assignee · Opened Apr 4, 2026
[Goal]: generic_const_args
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#64 · Opened Apr 4, 2026
[Goal]: min_generic_const_args
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#63 · 2 comments · Opened Apr 4, 2026
[Goal]: generic_const_parameter_types
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#62 · Opened Apr 4, 2026
[Goal]: adt_const_params
Open
- Is something wrong?
C-goal

Difficulty 5/5 Over a week Newbie friendliness 15/100

rust-lang/project-const-generics#61 · Opened Apr 4, 2026
[Goal]: min_adt_const_params
May be free again @BoxyUwU claimed this 212 days ago, and no pull request is open. Open
- Is something wrong?
C-goal

rust-lang/project-const-generics#59 · 1 assignee · Opened Apr 4, 2026
Interaction between min_generic_const_args/associated_const_equality/ambig_generic_arg_kinds
Open
- Is something wrong?
C-design-docs

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#58 · Opened Dec 6, 2024
need to check privacy for constants with `adt_const_params` and mgce
Open
- Is something wrong?
C-design-docs

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#57 · Opened Nov 29, 2024
Minimal const-generic bounds
Open
- Is something wrong?
C-design-docs

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#56 · Opened Sep 8, 2024
ambiguous multi-segment paths and `min_generic_const_exprs` will break derives
Open
- Is something wrong?
C-design-docs

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/project-const-generics#55 · Opened Jul 18, 2024
[Use Case]: const-time if/else choosing entirely different impls and not compiling the not-taken ones
Open
- Is something wrong?
A-generic_const_exprs C-experience-report

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/project-const-generics#52 · Opened Jun 8, 2023
[Use Case]: scope based normalization of const generics
Open
- Is something wrong?
A-generic_const_exprs C-experience-report

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/project-const-generics#51 · 1 comment · Opened Jun 8, 2023
[Use Case]: Recursively calculating determinant of Matrix<M, M>
Open
- Is something wrong?
A-generic_const_exprs C-experience-report

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/project-const-generics#49 · 3 reactions · Opened Nov 29, 2022

rust-lang/project-const-generics

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