# BinaryBuilder can I tell run\_wizard to provide a specific rust version

**URL:** <https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487>\
**Category:** Tooling\
**Tags:** binarybuilder\
**Created:** [February 5, 2026, 7:27pm UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487 "2026-02-05T19:27:48Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [February 5, 2026, 7:27pm UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/1 "2026-02-05T19:27:48Z")

</div>

I am trying to build the library for project [GitHub - oheil/Slint.jl: Slint GUI for Julia](https://github.com/oheil/Slint.jl) with BinaryBuilder but it needs rust 1.88 but the wizard provides 1.87 only.

Trying to update to 1.88 in the sandbox brings `No space left on device`

Can I change some settings to the wizard for this purpose?

I found

```julia-auto
compilers = [:c, :rust]
preferred_rust_version = v"1.88.0"

```

but I guess this is for the resulting `build_tarballs.jl` file, which I can’t create with the wizard without rust 1.88.

Finding anything in [GitHub - JuliaPackaging/Yggdrasil: Collection of builder repositories for BinaryBuilder.jl](https://github.com/JuliaPackaging/Yggdrasil) seems to be impossible. How is this supposed to be a repository of recipes? I tried searching for some recipe for my case but it is just a needle in the haystack. Or I probably missed something somewhere.

For project specific information, the binary in question is build with:

```julia-auto
cd Slint.jl/deps/SlintWrapper
cargo build --release

```

The resulting binary is then in

```julia-auto
Slint.jl/deps/SlintWrapper/target/release/libslintwrapper.so

```

The final installation location (just by copying it) is

```julia-auto
Slint.jl/deps/libslintwrapper.so

```

The Windows variant is `slintwrapper.dll`

I am stuck now with the BinaryBuilder process and need some help.

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [February 6, 2026, 12:41am UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/2 "2026-02-06T00:41:08Z")

</div>

> [@oheil](#):
>
> BinaryBuilder but it needs rust 1.88 but the wizard provides 1.87 only.

You may be using an old version of BinaryBuilderBase, we currently have Rust v1.91: [Add RustToolchain 1.91 by Keno · Pull Request #453 · JuliaPackaging/BinaryBuilderBase.jl · GitHub](https://github.com/JuliaPackaging/BinaryBuilderBase.jl/pull/453).

> [@oheil](#):
>
> Can I change some settings to the wizard for this purpose?

No.

---

<div class="post-metadata">

**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [February 6, 2026, 9:36am UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/3 "2026-02-06T09:36:40Z")

</div>

> [@giordano](#):
>
> You may be using an old version of BinaryBuilderBase, we currently have Rust v1.91: [Add RustToolchain 1.91 by Keno · Pull Request #453 · JuliaPackaging/BinaryBuilderBase.jl · GitHub](https://github.com/JuliaPackaging/BinaryBuilderBase.jl/pull/453)

I did install `BinaryBuilder` yesterday from scratch, not `BinaryBuilderBase.jl`. Am I supposed to do so?

Today I did:

```julia-auto
(@v1.7) pkg> st
      Status `~/.julia/environments/v1.7/Project.toml`
  [12aac903] BinaryBuilder v0.6.5

(@v1.7) pkg> up
    Updating registry at `~/.julia/registries/General.toml`
    Updating `~/.julia/environments/v1.7/Project.toml`
  [12aac903] ↑ BinaryBuilder v0.6.5 ⇒ v0.6.6
    Updating `~/.julia/environments/v1.7/Manifest.toml`
  [12aac903] ↑ BinaryBuilder v0.6.5 ⇒ v0.6.6
Precompiling project...
  1 dependency successfully precompiled in 9 seconds (81 already precompiled)

```

But still:

```julia-auto
...
error: rustc 1.87.0 is not supported by the following packages:
...

```

---

<div class="post-metadata">

**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [February 6, 2026, 10:22am UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/4 "2026-02-06T10:22:52Z")

</div>

Somewhere I read that julia 1.7 is needed for BinaryBuilder. So, perhaps this information is outdated so I tried with 1.12.4 with same result:

```julia-auto
(@v1.12) pkg> st
Status `~/.julia/environments/v1.12/Project.toml`
  [12aac903] BinaryBuilder v0.6.6

...
error: rustc 1.87.0 is not supported by the following packages:
...

```

So how to get the newer rust with `BinaryBuilderBase` ?

---

<div class="post-metadata">

**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [February 6, 2026, 10:30am UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/5 "2026-02-06T10:30:00Z")

</div>

And the same with master:

```julia-auto
(@v1.12) pkg> add BinaryBuilder#master

(@v1.12) pkg> st
Status `~/.julia/environments/v1.12/Project.toml`
  [12aac903] BinaryBuilder v0.6.6 `https://github.com/JuliaPackaging/BinaryBuilder.jl.git#master`

```

---

<div class="post-metadata">

**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [February 6, 2026, 10:47am UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/6 "2026-02-06T10:47:18Z")

</div>

Adding `BinaryBuilderBase#master` does result in providing rust 1.19:

```julia-auto
(@v1.12) pkg> add BinaryBuilderBase#master
    Updating git-repo `https://github.com/JuliaPackaging/BinaryBuilderBase.jl.git`
   Resolving package versions...
     Project No packages added to or removed from `~/.julia/environments/v1.12/Project.toml`
    Manifest No packages added to or removed from `~/.julia/environments/v1.12/Manifest.toml`

```

The dependency and existence of BinaryBuilderBase could be mentioned a bit better in the BinaryBuilder documentation.

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [February 6, 2026, 12:15pm UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/7 "2026-02-06T12:15:15Z")

</div>

Most people using BinaryBuilder activate the [top-level environment in Yggdrasil](https://github.com/JuliaPackaging/Yggdrasil/blob/2fab96df306e2cb011ce4bceb7edba361cdc4230/Project.toml): if you plan to submit a PR to Yggdrasil you want to make sure to use the exact same environment as what’s used in CI anyway.

---

<div class="post-metadata">

**Author:** ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)\
**Post date:** [February 6, 2026, 12:30pm UTC](https://discourse.julialang.org/t/binarybuilder-can-i-tell-run-wizard-to-provide-a-specific-rust-version/135487/8 "2026-02-06T12:30:43Z")

</div>

I don’t understand this, perhaps because I am just starting with BinaryBuilder.

First I wanted to see how the BinaryBuilder process works.

Afterwards I wanted to check out how to provide the results of BinaryBuilder, if successfull, to anything whats after this. It’s an iterative process for me for now and I am yet at the first step, which is BinaryBuilder wizard. 🤷‍♂️

Reading and understanding all the documentations of BinaryBuilder and Yggdrasil was a bit overwhelming, so here I am.