# Environment prompt in the REPL
**URL:** https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795
**Category:** General Usage
**Created:** [October 25, 2018, 5:46pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795 "2018-10-25T17:46:00Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [October 25, 2018, 5:46pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/1 "2018-10-25T17:46:00Z")
Hello,
I’d like to know how I could change the `julia>` prompt REPL when I activate a project. In the package manager prompt, the environments are indicated, but not when I go back to the REPL. I think it would be less confusing if we can know in which environment we are.
Thanks!
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [October 25, 2018, 7:24pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/2 "2018-10-25T19:24:46Z")
Ugly, but does the job…
```julia
julia> import Pkg
julia> Base.active_repl.interface.modes[1].prompt =
Pkg.REPLMode.promptf()[1:end-6] * " julia> "
(v1.1) julia> 1+1
2
```
---
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [October 25, 2018, 7:37pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/3 "2018-10-25T19:37:38Z")
Nice!
Can’t put it in the `startup.jl` though 😕
```bash
user@Linux-Roy:~$ julia
ERROR: LoadError: UndefVarError: active_repl not defined
Stacktrace:
[1] getproperty(::Module, ::Symbol) at ./sysimg.jl:13
[2] top-level scope at none:0
[3] include at ./boot.jl:317 [inlined]
[4] include_relative(::Module, ::String) at ./loading.jl:1041
[5] include at ./sysimg.jl:29 [inlined]
[6] include_ifexists at ./client.jl:191 [inlined]
[7] load_julia_startup() at ./client.jl:288
[8] exec_options(::Base.JLOptions) at ./logging.jl:312
[9] _start() at ./client.jl:421
in expression starting at /home/user/.julia/config/startup.jl:18
```
Any idea how to set it up automatically?
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [October 25, 2018, 7:46pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/4 "2018-10-25T19:46:03Z")
```julia
import REPL
import Pkg
Base.atreplinit() do repl
repl.interface = REPL.setup_interface(repl)
repl.interface.modes[1].prompt =
Pkg.REPLMode.promptf()[1:end-6] * " julia> "
end
```
---
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [October 25, 2018, 8:03pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/5 "2018-10-25T20:03:45Z")
Very nice, thanks a lot! 🙂
Works like a charm.
---
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [October 25, 2018, 8:21pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/6 "2018-10-25T20:21:34Z")
Here’s my working setup for `startup.jl` using OhMyREPL, Revise and this workaround in case someone is interested!
```julia
import REPL
import Pkg
atreplinit() do repl
repl.interface = REPL.setup_interface(repl)
repl.interface.modes[1].prompt = Pkg.REPLMode.promptf()[1:end-6] * " julia> "
@eval using OhMyREPL
@eval colorscheme!("BoxyMonokai256")
@eval ENV["JULIA_INPUT_COLOR"] = :bold
@eval ENV["JULIA_ANSWER_COLOR"] = :bold
try
@eval using Revise
@async Revise.wait_steal_repl_backend()
catch
end
end
```
---
### Author:  [@musm](https://discourse.julialang.org/u/musm)
#### Post date: [October 26, 2018, 9:28pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/7 "2018-10-26T21:28:46Z")
I’d love to get this working but switching environments doesn’t seem to switch the repl for me
```julia
import REPL
import Pkg
@sync atreplinit() do repl
repl.interface = REPL.setup_interface(repl)
repl.interface.modes[1].prompt = Pkg.REPLMode.promptf()[1:end-6] * " > "
# try
# @eval using BenchmarkTools
# # @eval using Revise
# # @async Revise.wait_steal_repl_backend()
# catch
# end
end
```
is permanently stuck at `(1.0) julia >` even when I change environments
---
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [October 26, 2018, 10:04pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/8 "2018-10-26T22:04:40Z")
Indeed, I can confirm that the prompt does not update to the new one when I switch between project.
edit - I’m now loading a function in `startup.jl`. So, when I switch projetcs, I need to execute `ap()`. I’m sure there’s a better way to do it. I think that it might be a good feature/bahaviour for a 1.0.2 release.
```julia
function ap()
Base.active_repl.interface.modes[1].prompt = Pkg.REPLMode.promptf()[1:end-6] * " julia> "
end
```
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [October 26, 2018, 10:16pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/9 "2018-10-26T22:16:45Z")
Use
```julia
() -> Pkg.REPLMode.promptf()[1:end-6] * " julia> "
```
instead
---
### Author:  [@musm](https://discourse.julialang.org/u/musm)
#### Post date: [October 26, 2018, 10:25pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/10 "2018-10-26T22:25:29Z")
Thanks!
here’s mine for anyone interested
```julia
import REPL
import Pkg
atreplinit() do repl
repl.interface = REPL.setup_interface(repl)
repl.interface.modes[1].prompt = () -> begin
str = Pkg.REPLMode.promptf()
occursin(r"(v[0-9].[0-9])", str) ? "> " : str[1:end-6] * " > "
end
end
```
---
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [October 26, 2018, 10:30pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/11 "2018-10-26T22:30:11Z")
Awesome! Thanks @kristoffer.carlsson for your valuable inputs and @musm for your configuration. 🙂
---
### Author:  [@musm](https://discourse.julialang.org/u/musm)
#### Post date: [October 31, 2018, 6:05am UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/13 "2018-10-31T06:05:23Z")
Actually changing the prompt like this **breaks** Rebugger… I’m hoping there is a way to change the repl and have Rebugger work
---
### Author:  [@Balinus](https://discourse.julialang.org/u/Balinus)
#### Post date: [April 10, 2019, 1:56pm UTC](https://discourse.julialang.org/t/environment-prompt-in-the-repl/16795/14 "2019-04-10T13:56:59Z")
Did you succeed at having Rebugger and the prompt working together?
Thanks!