Can't install rustup because of existing rust that I can't remove #953

mikeyhew · 2017-02-12T03:54:42Z

We have a copy of rustc version 1.14.0 installed on my school's server. I want to set up the latest version of rust (currently 1.15.1) in my home directory, ideally using rustup. But because of the existing copy of rust - which I can't remove, since I don't have root access - rustup-init fails with the following error:

warning: it looks like you have an existing installation of Rust
warning: rustup cannot be installed alongside Rust. Please uninstall first
warning: run `/usr/local/lib/rustlib/uninstall.sh` as root to uninstall Rust
error: cannot install while Rust is installed

The text was updated successfully, but these errors were encountered:

suhr · 2017-03-03T02:39:24Z

I wonder why can't rustup have a special system toolchan, that cannot be installed or updated but can be chosen.

brson · 2017-03-17T02:22:39Z

I'm not sure the best way to fix this offhand. I think the reason I did this was to reduce potential confusion after install, having seen cases where people were still invoking the old rustc afterwards. For example, there are many cases where rustup fails to configure PATH, and that would leave the old rustc active.

We could possibly loosen this to a warning, like "warning: There is an existing rustc installed to $path. Depending on how $PATH is configured, the existing toolchain may take precedence."

Could also make it interactive, but that's deeper surgery.

A 'system' toolchain is a useful feature to add, but does not solve the problem of users being confused about which toolchain they are using.

chris3k · 2017-05-05T23:16:02Z

Temporary workaroud (let's call it - force install) for this, is to download rustup.rs source code and comment sanity checks in do_pre_install_sanity_checks() (or apply patch)

diff --git a/src/rustup-cli/self_update.rs b/src/rustup-cli/self_update.rs
index 7d1a641..c289962 100644
--- a/src/rustup-cli/self_update.rs
+++ b/src/rustup-cli/self_update.rs
@@ -381,7 +381,7 @@ fn do_pre_install_sanity_checks() -> Result<()> {
         warn!("it looks like you have an existing installation of Rust");
         warn!("rustup cannot be installed alongside Rust. Please uninstall first");
         warn!("run `{}` as root to uninstall Rust", uninstaller_path.display());
-        return Err("cannot install while Rust is installed".into());
+        // return Err("cannot install while Rust is installed".into());
     }

     if rustup_sh_exists {

Then compile (cargo build) and then proceed with installation, e.g. RUSTUP_HOME=/home/user/.multirust CARGO_HOME=/home/user/.cargo ./target/debug/rustup-init --no-modify-path.

mikeyhew · 2017-05-10T04:43:03Z

The copy of rustc that we had on my school's server has since been removed, so I was able to install rustup just fine when I tried it last week. That being said, there should be some way to force installation, even if there is an existing Rust installation somewhere.

mgeisler · 2017-07-28T13:22:19Z

You can bypass the check by setting RUSTUP_INIT_SKIP_PATH_CHECK to yes:

$ ./rustup-init 
error: it looks like you have an existing installation of Rust at:
error: /usr/bin
error: rustup cannot be installed alongside Rust. Please uninstall first
error: if this is what you want, restart the installation with `-y'
error: cannot install while Rust is installed
$ RUSTUP_INIT_SKIP_PATH_CHECK=yes ./rustup-init 

Welcome to Rust!

This will download and install the official compiler for the Rust programming 
language, and its package manager, Cargo.
# ...

I think the error message should at least mention this environment variable -- I only found it after looking through the source of rustup-init.

yangchengjian · 2017-10-21T05:14:13Z

I meet the some question too, and I use

$RUSTUP_INIT_SKIP_PATH_CHECK=yes sh ./rustup-init.sh

to reinstall rust, It's work.

Thanks @mgeisler

anjalianjali1234 · 2018-08-28T17:53:07Z

Sorry for the late reply.

You just need to run:
curl -sSf https://static.rust-lang.org/rustup.sh | sh

it will fix the problem.

geofmureithi-zz · 2018-12-28T19:04:37Z

@anjalianjali1234 This no longer works:(rustc1.3.0)

$ curl -sSf https://static.rust-lang.org/rustup.sh | sh
The location of rustup.sh has moved.
Run the following command to install from the new location:
    curl https://sh.rustup.rs -sSf | sh

ssowellsvt · 2019-01-11T03:46:11Z

Just run:

sudo apt remove rustc
then
curl https://sh.rustup.rs/ -sSf | sh

mikeyhew · 2019-01-12T05:50:05Z

@ssowellsvt one of the premises of this issue is that the user doesn't have root access and can't use sudo.

But as @mgeisler pointed out, RUSTUP_INIT_SKIP_PATH_CHECK=yes works. So I think we can close this issue?

PAVAN-IS201401018 · 2019-01-16T10:50:26Z

The copy of rustc that we had on my school's server has since been removed, so I was able to install rustup just fine when I tried it last week. That being said, there should be some way to force installation, even if there is an existing Rust installation somewhere.

How it was removed?

mikeyhew · 2019-01-16T22:55:44Z

I don't know. Probably one of the admins removed it.

anjalianjali1234 · 2019-01-17T07:18:37Z

https://doc.rust-lang.org/1.0.0/book/installing-rust.html Please follow this link.

…

On Thu, Jan 17, 2019 at 4:25 AM Michael Hewson ***@***.***> wrote: I don't know. Probably one of the admins removed it. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#953 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AgKDbJJMUwF5vmUhzS8ynn6RbEw0HmmZks5vD63xgaJpZM4L-YjL> .

mikeyhew · 2019-01-23T23:20:01Z

@anjalianjali1234 was that comment directed at me? I'm not sure what you're getting at.

mikeyhew · 2019-01-23T23:29:32Z

Anyway, it looks like the issue was fixed in #705. You can now add the -y option to skip the check for an existing rustc or cargo binary in PATH, and this is referenced in the error message.

Li-ReDBox · 2019-03-02T01:05:17Z

Not sure what has happened, using -y or RUSTUP_INIT_SKIP_PATH_CHECK to stop checking when installing rustup did not work for me:

./rustup-init --version
rustup-init 1.16.0 (beab5ac2b 2018-12-06)

RUSTUP_INIT_SKIP_PATH_CHECK=yes ./rustup-init 
warning: it looks like you have an existing installation of Rust
warning: rustup cannot be installed alongside Rust. Please uninstall first
warning: run `/usr/local/lib/rustlib/uninstall.sh` as root to uninstall Rust
error: cannot install while Rust is installed

./rustup-init -y./rustup-init -y
warning: it looks like you have an existing installation of Rust
warning: rustup cannot be installed alongside Rust. Please uninstall first
warning: run `/usr/local/lib/rustlib/uninstall.sh` as root to uninstall Rust
error: cannot install while Rust is installed

warning: it looks like you have an existing installation of Rust
warning: rustup cannot be installed alongside Rust. Please uninstall first
warning: run `/usr/local/lib/rustlib/uninstall.sh` as root to uninstall Rust
error: cannot install while Rust is installed

Is it possible to install rustup without un-installing?

xtowerlink · 2019-09-30T06:08:49Z

https://doc.rust-lang.org/1.0.0/book/installing-rust.html Please follow this link.
…
On Thu, Jan 17, 2019 at 4:25 AM Michael Hewson @.***> wrote: I don't know. Probably one of the admins removed it. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#953 (comment)>, or mute the thread https://github.com/notifications/unsubscribe-auth/AgKDbJJMUwF5vmUhzS8ynn6RbEw0HmmZks5vD63xgaJpZM4L-YjL .

tks!

xtowerlink · 2019-09-30T06:10:21Z

thank you very much !

HarpreetSandhu · 2019-11-04T18:31:32Z

After compiling all above comments, I used following command and it worked perfectly with previously installed rust.
curl https://sh.rustup.rs -sSf | RUSTUP_INIT_SKIP_PATH_CHECK=yes sh

jblancaster · 2019-12-25T22:58:45Z

@ssowellsvt - Spot on - Thanks!

See rust-lang#953

tpmccallum · 2020-02-05T03:39:00Z

Yes, use

export RUSTUP_INIT_SKIP_PATH_CHECK=yes
curl https://sh.rustup.rs -sSf | sh
source $HOME/.cargo/env

See rust-lang#953

kelvinkirima014 · 2021-06-10T09:29:44Z

Just run:

sudo apt remove rustc
then
curl https://sh.rustup.rs/ -sSf | sh

This worked for me

mrcnski · 2021-12-02T21:24:05Z

On OSX, I had to manually go into /usr/local/bin and uninstall all the rust* binaries and the cargo binary. For some reason rustup self uninstall was not removing these.

kinnison · 2021-12-03T08:20:13Z

@m-cat rustup-init would never have installed binaries into /usr/local/bin unless you did something very odd, so that's expected.

pdunne · 2021-12-29T11:12:29Z

On OSX, I had to manually go into /usr/local/bin and uninstall all the rust* binaries and the cargo binary. For some reason rustup self uninstall was not removing these.

Same thing happened to me (OSX Big Sur, Intel Mac) after updating to either 1.56 or 1.57. Somehow I had the binaries also in /usr/local/bin and this messed up cross-compilation, i.e. not recognising installed targets like wasm32-unknown-unknown.

after running rustup self uninstall I removed the rust* and cargo bin from /usr/local/bin, and was then able to reinstall Rust. This also solved my cross-compilation problems.

CMCDragonkai · 2023-05-17T13:00:42Z

If an existing rust installation is left there, is there a way to force rustup-init to always setup the PATH so that its installed version takes precedence?

rbtcollins · 2023-05-17T18:39:22Z

@CMCDragonkai we attempt to do that when you accept the warning, but its not always possible depending on how you have your shell configured.

suhr mentioned this issue Mar 3, 2017

rustup: installing it via portage? gentoo/gentoo-rust#221

Open

brson added the bug label Mar 16, 2017

bokobza mentioned this issue Oct 11, 2018

"cargo build" return an error and installation fail mimblewimble/grin-miner#38

Closed

mikeyhew closed this as completed Jan 23, 2019

LucianaMarques mentioned this issue Jan 28, 2019

Missing lifetime specifier in src/reader.rs mozilla/grcov#247

Closed

sollyucko added a commit to sollyucko/rustup that referenced this issue Jan 23, 2020

Allow installing alongside existing Rust (with warning)

703b405

See rust-lang#953

sollyucko mentioned this issue Jan 23, 2020

Allow installing alongside existing Rust (with warning) #2214

Merged

BeniCheni pushed a commit to BeniCheni/rustup.rs that referenced this issue May 10, 2020

Allow installing alongside existing Rust (with warning)

8e620aa

See rust-lang#953

rami3l mentioned this issue Aug 30, 2023

Mention brew install rustup-init in the user guide #3466

Merged

davidbuzz mentioned this issue Feb 21, 2024

when rustup finds an existing rust install it doesn't give the user any hints about what to do next #3679

Open

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Can't install rustup because of existing rust that I can't remove #953

Can't install rustup because of existing rust that I can't remove #953

mikeyhew commented Feb 12, 2017

suhr commented Mar 3, 2017

brson commented Mar 17, 2017

chris3k commented May 5, 2017

mikeyhew commented May 10, 2017

mgeisler commented Jul 28, 2017

yangchengjian commented Oct 21, 2017

anjalianjali1234 commented Aug 28, 2018 •

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geofmureithi-zz commented Dec 28, 2018 •

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ssowellsvt commented Jan 11, 2019

mikeyhew commented Jan 12, 2019 •

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PAVAN-IS201401018 commented Jan 16, 2019

mikeyhew commented Jan 16, 2019

anjalianjali1234 commented Jan 17, 2019 via email

mikeyhew commented Jan 23, 2019

mikeyhew commented Jan 23, 2019

Li-ReDBox commented Mar 2, 2019

xtowerlink commented Sep 30, 2019

xtowerlink commented Sep 30, 2019

HarpreetSandhu commented Nov 4, 2019

jblancaster commented Dec 25, 2019

tpmccallum commented Feb 5, 2020

kelvinkirima014 commented Jun 10, 2021

mrcnski commented Dec 2, 2021

kinnison commented Dec 3, 2021

pdunne commented Dec 29, 2021

CMCDragonkai commented May 17, 2023

rbtcollins commented May 17, 2023

Can't install rustup because of existing rust that I can't remove #953

Can't install rustup because of existing rust that I can't remove #953

Comments

mikeyhew commented Feb 12, 2017

suhr commented Mar 3, 2017

brson commented Mar 17, 2017

chris3k commented May 5, 2017

mikeyhew commented May 10, 2017

mgeisler commented Jul 28, 2017

yangchengjian commented Oct 21, 2017

anjalianjali1234 commented Aug 28, 2018 • edited Loading

geofmureithi-zz commented Dec 28, 2018 • edited Loading

ssowellsvt commented Jan 11, 2019

mikeyhew commented Jan 12, 2019 • edited Loading

PAVAN-IS201401018 commented Jan 16, 2019

mikeyhew commented Jan 16, 2019

anjalianjali1234 commented Jan 17, 2019 via email

mikeyhew commented Jan 23, 2019

mikeyhew commented Jan 23, 2019

Li-ReDBox commented Mar 2, 2019

xtowerlink commented Sep 30, 2019

xtowerlink commented Sep 30, 2019

HarpreetSandhu commented Nov 4, 2019

jblancaster commented Dec 25, 2019

tpmccallum commented Feb 5, 2020

kelvinkirima014 commented Jun 10, 2021

mrcnski commented Dec 2, 2021

kinnison commented Dec 3, 2021

pdunne commented Dec 29, 2021

CMCDragonkai commented May 17, 2023

rbtcollins commented May 17, 2023

anjalianjali1234 commented Aug 28, 2018 •

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geofmureithi-zz commented Dec 28, 2018 •

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mikeyhew commented Jan 12, 2019 •

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