Do I need to set JUPYTER environment variable?

[LinZhang1004]

I download Jupyter from Anaconda. I set one environment variable PYTHONHOME = "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3"

I then open up a Julia terminal and type the following

Pkg.update()
Pkg.add("IJulia")

I then start the Jupyter notebook application to go to Julia 0.5.0, but my screen shows "Kernel error". I then googled, and was told I need to run
Pkg.build("IJulia")

But when I run this in a Julia terminal, the error says:

Set ' ENV["JUPYTER"]="/path/to/jupyter" and rerun Pkg.build("IJulia") '

My question is: how to set JUPYTER environment variable? How to find the directory of JUPYTER? Thank you.

[stevengj]

How are you running jupyter? Typing where jupyter at the Windows command prompt will tell you where jupyter is installed, assuming it is on your path. Then you would do something like:

ENV["JUPYTER"]="C:\\Users\\lzhang\\AppData\\Local\\Continuum\\Anaconda3\\bin\\jupyter"
Pkg.build("IJulia")

in Julia. Notice that the backslashes have to be doubled when you type them in a Julia string. I'm just guessing that the path is your Anaconda path with \bin\jupyter appended, but replace that with whatever where jupyter tells you.

[LinZhang1004]

I look at the folder "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3", but there is no folder of "bin". I do find a folder of "bin" inside "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3\Library", but even inside that bin, I cannot find jupeter.exe

Typing where jupyter at the Windows command prompt, I was told

INFO: Could not find files for the given pattern(s).

Can anybody help me? Thank you.

[stevengj]

How are you running jupyter, then?

[stevengj]

I'm also confused, because normally IJulia will install its own Miniconda (via the Conda.jl package) and its own Jupyter if it doesn't find one.

What is the output of:

using Conda
Conda.update()
rm(Pkg.dir("IJulia", "deps", "JUPYTER"), force=true)
ENV["JUPYTER"]=""
Pkg.build("IJulia")
using IJulia
IJulia.notebook()

[hwdong]

I have the same question as Zhang . I can't find jupyter on my windows. I just install python2 and jupyter without Miniconda or Conda or Anaconda. How to set ENV["JUPYTER"]="" ?

[stevengj]

@hwdong, please don't spam multiple issues (#565, #566) with essentially the same question. See my comment in #566 for how to set ENV["JUPYTER"]="" and use the notebook.

[LinZhang1004]

@stevengj I uninstalled my Anaconda3, and re-installed it. Well, same problem.

I then run your code on Julia terminal

using Conda
Conda.update()
rm(Pkg.dir("IJulia", "deps", "JUPYTER"), force=true)
ENV["JUPYTER"]=""
Pkg.build("IJulia")

Many errors was thrown out

julia> Pkg.build("IJulia")
INFO: Building Conda
INFO: Building MbedTLS
INFO: Building WinRPM
WARNING: skipping repodata/repomd.xml, not in cache -- call WinRPM.update() to d
ownload
WARNING: skipping repodata/repomd.xml, not in cache -- call WinRPM.update() to d
ownload
INFO: Downloading https://cache.julialang.org/http://download.opensuse.org/repos
itories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.xml
WARNING: Unknown download failure, error code: 2148270094
WARNING: Retry 1/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 2/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 3/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 4/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 5/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: received error 0 while downloading https://cache.julialang.org/http://d
ownload.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repod
ata/repomd.xml
INFO: Downloading https://cache.julialang.org/http://download.opensuse.org/repos
itories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.xml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 1/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 2/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 3/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 4/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 5/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: received error 0 while downloading https://cache.julialang.org/http://d
ownload.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repod
ata/repomd.xml
INFO: Building ZMQ
WARNING: skipping repodata/repomd.xml, not in cache -- call WinRPM.update() to d
ownload
WARNING: skipping repodata/repomd.xml, not in cache -- call WinRPM.update() to d
ownload
INFO: Updating WinRPM package list
INFO: Downloading https://cache.julialang.org/http://download.opensuse.org/repos
itories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.xml
WARNING: Unknown download failure, error code: 2148270094
WARNING: Retry 1/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 2/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 3/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 4/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 5/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: received error 0 while downloading https://cache.julialang.org/http://d
ownload.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repod
ata/repomd.xml
INFO: Downloading https://cache.julialang.org/http://download.opensuse.org/repos
itories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.xml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 1/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 2/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 3/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 4/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: Unknown download failure, error code: 2148270088
WARNING: Retry 5/5 downloading: https://cache.julialang.org/http://download.open
suse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.x
ml
WARNING: received error 0 while downloading https://cache.julialang.org/http://d
ownload.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repod
ata/repomd.xml
=================================[ ERROR: ZMQ ]=================================


LoadError: None of the selected providers can install dependency zmq.
Use BinDeps.debug(package_name) to see available providers

while loading C:\Users\lzhang\.julia\v0.6\ZMQ\deps\build.jl, in expression start
ing on line 35

================================================================================

INFO: Building IJulia
INFO: Installing Jupyter via the Conda package.
  File "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3\lib\site.py", line 177

    file=sys.stderr)
        ^
SyntaxError: invalid syntax
===============================[ ERROR: IJulia ]================================


LoadError: Failed to find or install Jupyter 3.0 or later. Please install Jupyte
r manually, set `ENV["JUPYTER"]="/path/to/jupyter", and rerun `Pkg.build("IJulia
")`.
while loading C:\Users\lzhang\.julia\v0.6\IJulia\deps\build.jl, in expression st
arting on line 7

================================================================================


================================[ BUILD ERRORS ]================================


WARNING: IJulia and ZMQ had build errors.

 - packages with build errors remain installed in C:\Users\lzhang\.julia\v0.6
 - build the package(s) and all dependencies with `Pkg.build("IJulia", "ZMQ")`
 - build a single package by running its `deps/build.jl` script

================================================================================

Also when I run where jupyter I get nothing as shown as follows:

C:\Users\lzhang>where jupyter
INFO: Could not find files for the given pattern(s).

Anyone knows what's wrong with my IJulia? Thanks.

[stevengj]

@LinZhang1004, as the error message says, there was an error in installing ZMQ, apparently due to a download failure in WinRPM. Since the error originates in WinRPM, you should look there, and it turns out that this error has already been reported: JuliaPackaging/WinRPM.jl#80 ... see the discussion in that issue for workarounds. In particular, the discussion indicates that it may originated due to the Chinese Firewall if you are in China.

Closing here as this is not an IJulia issue per se, but rather an issue with installing one of its dependencies.

[LinZhang1004]

I created an issue #115 in WinRPM.jl. With the help of @Gnimuc, the ZMQ error is gone. But when I run Pkg.build("IJulia"), there is still an error (seems a Python syntax error), as follows:

julia> Pkg.add("IJulia")
INFO: Package IJulia is already installed

julia> ENV["JUPYTER"]=""
""

julia> Pkg.build("IJulia")
INFO: Building Conda
INFO: Building MbedTLS
INFO: Building WinRPM
INFO: Downloading http://download.opensuse.org/repositories/windows:/mingw:/win3
2/openSUSE_Leap_42.2/repodata/repomd.xml
INFO: Downloading http://download.opensuse.org/repositories/windows:/mingw:/win6
4/openSUSE_Leap_42.2/repodata/repomd.xml
INFO: Building ZMQ
INFO: Updating WinRPM package list
INFO: Downloading http://download.opensuse.org/repositories/windows:/mingw:/win3
2/openSUSE_Leap_42.2/repodata/repomd.xml
INFO: Downloading http://download.opensuse.org/repositories/windows:/mingw:/win6
4/openSUSE_Leap_42.2/repodata/repomd.xml
INFO: Building IJulia
INFO: Installing Jupyter via the Conda package.
  File "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3\lib\site.py", line 177

    file=sys.stderr)
        ^
SyntaxError: invalid syntax
===============================[ ERROR: IJulia ]================================


LoadError: Failed to find or install Jupyter 3.0 or later. Please install Jupyte
r manually, set `ENV["JUPYTER"]="/path/to/jupyter", and rerun `Pkg.build("IJulia
")`.
while loading C:\Users\lzhang\.julia\v0.6\IJulia\deps\build.jl, in expression st
arting on line 7

================================================================================


================================[ BUILD ERRORS ]================================


WARNING: IJulia had build errors.

 - packages with build errors remain installed in C:\Users\lzhang\.julia\v0.6
 - build the package(s) and all dependencies with `Pkg.build("IJulia")`
 - build a single package by running its `deps/build.jl` script

================================================================================


julia>

Can anyone tell me how to fix this? Thank you for your time and help!

[LinZhang1004]

I have changed the file C:\Users\lzhang\.julia\v0.6\IJulia\deps\build.jl, per @gomiero (cf. #379), but Pkg.build("IJulia") is still not working.

Is it because of my environment variable? So far I set one environment variable PYTHONHOME = "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3"

[stevengj]

If you are using Conda, via ENV["JUPYTER"]="", i.e. you want Julia to install its own miniconda distro, then you shouldn't set PYTHONHOME at all, and in fact you don't need your own Anaconda installation.

If you want to use your own Anaconda installation, you should do conda install jupyter yourself and then set ENV["JUPYTER"]="jupyter".

[LinZhang1004]

It works now after I delete the environment variable PYTHONHOME = "C:\Users\lzhang\AppData\Local\Continuum\Anaconda3". Thank you @stevengj