Someone knows what software and work environment best to use for the language of clojure in Windows 10 and what should be installed for it.
I tried to install the language in IntelliJ IDEA Community Edition 2017.3 by downloading cursive but when I tried to run the following program:
(ns clojure.examples.hello
(: gen-class)
(defn hello-world [username]
(println (format "Hello,% s" username)))
I encountered the following error:
C: \ Users \ user1 \ IdeaProjects \ untitled5> (hello-world "world")
'hello-world' is not recognized as an internal or external command,
operable program or batch file.
Someone knows what the problem is and can help
thanks!
Related
before I start, you probably need to know three things:
I don't have Java background
I'm a Clojure newbie - started to learn it
question is related to my "training" package kennyfy
TL;DR version I'm not able to import/use my training package in a project
Longer version
I set myself a goal - write simple API which converts text to kennyspeak. Before that I've created a package (using default lein template).
I tried to import this package to my API.
Part of project.clj looks like this:
:repositories [["jitpack" "https://jitpack.io"]]
:dependencies [[com.github.radmen/clojure-kennyfy "0.1.2"]]
lein deps fetches the package without any problems.
When I try to use it, Clojure fails with following message:
kennyfy-api.core=> (radmen.kennyfy/kenny-speak "foo")
ClassNotFoundException radmen.kennyfy java.net.URLClassLoader.findClass (URLClassLoader.java:382)
I understand the error, yet I've no idea why this class is not imported.
I am quite sure, that this may be related to the metadata stored in the package, which results in failed imports.
What am I doing wrong?
Thank you
$ java -version
openjdk version "1.8.0_192"
OpenJDK Runtime Environment (build 1.8.0_192-b26)
OpenJDK 64-Bit Server VM (build 25.192-b26, mixed mode)
$ lein version
Leiningen 2.8.3 on Java 1.8.0_192 OpenJDK 64-Bit Server VM
Clojure 1.9.0
A clojure namespaces is loaded the first time it is required.
foo.core=> (radmen.kennyfy/kenny-speak "foo")
Execution error (ClassNotFoundException) at java.net.URLClassLoader/findClass (URLClassLoader.java:382).
radmen.kennyfy
foo.core=> (require '[radmen.kennyfy :as kennyfy])
nil
foo.core=> (kennyfy/kenny-speak "foo")
"mpfppfppf"
foo.core=> (radmen.kennyfy/kenny-speak "foo")
"mpfppfppf"
foo.core=>
I'm actually using git bash instead of default windows command shell (cmd).But I cannot run 'lein repl' in git bash. It doesn't show anything and I must press crtl + c to regain control.
Any suggestion?
Thank you.
-- EDIT
I'm running lein instead of lein.bat because I added alias lein=lein.bat in my .bashrc, so I don't think it is a problem.
lein run is working fine in Git Bash and leiningen works fine in windows cmd. The problem is explicity with lein repl.
When I run which lein I got which: no lein in ([MY-PATH-VAR])
First Check if you have installed lein.bat in windows using below command in command prompt
lein --version
Then if lein is available, then in your git bash type the below command
alias lein='lein.bat'
Thein run your lein command it will work for sure...
I had exactly the same problem as ThomasH where calling lein repl from an Emacs shell would get me the introductory messages and a prompt ...
nREPL server started on port 55801 on host 127.0.0.1 - nrepl://127.0.0.1:55801
REPL-y 0.4.4, nREPL 0.8.3
Clojure 1.10.1
Java HotSpot(TM) 64-Bit Server VM 15.0.2+7-27
Docs: (doc function-name-here)
(find-doc "part-of-name-here")
Source: (source function-name-here)
Javadoc: (javadoc java-object-or-class-here)
Exit: Control+D or (exit) or (quit)
Results: Stored in vars *1, *2, *3, an exception in *e
... but seemingly freeze when I try to get it to do anything, like:
user=> (+ 1 2 3 8)
When I open up the Task Manager, I could see the underlying Java program continuously at ~30% CPU for no apparent reason, and the only way I could reliably get out of it was to end the Java process from there.
But through a lot of effort, I finally figured out that the reason this was happening was a shell environment variable TERM=emacs. Whenever you call M-x shell, the function comint-term-environment puts it in for you.
(According to the source code in comint.el, it's done so that it "lets us specify a width". And it also mentions that "Some programs that use terminfo get very confused if TERM is not a valid terminal type". So there you have it - it looks like Java is one of those.)
To resolve this, you can set the variable system-uses-terminfo to 't before calling M-x shell.
(setq system-uses-terminfo t)
After having done so, Java is now finally responsive and I can evaluate things in the repl.
user=> (+ 1 2 3 8)
14
If you have this problem and got fortunate enough to stumble here, I hope this helps! =D
The following worked for me to get this running in Git bash on Windows 10. When I originally got this working, it was freezing, but this post helped me figure out how to fix by including winpty.
If you haven't added the lein.bat file to your Path variable, then do steps 1-3. Otherwise, skip to 4. In the System Properties -> Advanced -> Environment Variables area, select the Path variable
Click Edit and add the directory containing lein.bat to this. Mine was C:\Program Files (x86)\lein - lein.bat was stored inside the lein folder
Click OK until you close out of the prompts
Confirm the update worked by opening a command prompt (windows key, then type cmd)
Enter lein. If you haven't already, it should prompt you to run the install command. Do this if prompted, then enter lein again to make sure it worked (should output help menu)
Close out of Git bash if already open, then open again
Enter alias repl='winpty lein.bat repl'. You can choose what you want the alias to be, I used repl
Type repl (or whatever alias you added). Should take a second, then begin a REPL prompt
Using GitBash as your terminal, you can install the lein script rather than the lein.bat script.
The lein script will run correctly in GitBash (as it is effectively a Unix environment).
I recommend installing the lein script in a directory called bin in your user account directory, e.g.:
c:/Users/your-account/bin
Placing the lein script in bin will allow you to run the lein command anywhere on the GitBash command line.
A Note about Emacs, lein and windows
The lein script will also be called correctly from Emacs, assuming you run Emacs from the GitBash terminal, ie. runemacs. Add Emacs install directory to your user account PATH environment variable and GitBash will find it on the command line.
Emacs installed on Windows works better when run from the GitBash terminal, as you can then use ediff in Emacs, which requires the diff command that GitBash terminal provides.
My recommended Emacs installs for windows
zklhp emacs-w64 optomised
Chocolatey Emacs 64bit
My experience was that lein repl (and I do use the lein bash script) would start up ok, also printing the startup messages of the lein command to the shell, but would then stop to output anything (although the process might be running fine), part. not providing an interactive prompt (except for the first), not echoing user input (except for the first), nor printing evaluation results. When terminating the process with Ctrl-C all my inputs would be passed to the underlying shell (with funny results like $ (+ 3 4) bash: +: command not found).
My solution is to use Git CMD for interactive commands like lein repl, lein figwheel etc., which (unfortunately, as it might seem) works fine. Running a Git sh process inside a different terminal emulation (Cmder) also gives me a working interactive environment.
I did
npm install -g foundation-cli bower gulp
got
/|
| | /| .
. /\| \/ |/|
|\/ | Thanks for installing Foundation for Apps
||\__/\____/|| ------------------------------------------
Then, I did
gem install bundler
and got
Successfully installed bundler-1.10.5
but when I tried
foundation-apps new myApp
I got
'foundation-apps' is not recognized as an internal or external command,
operable program or batch file.
working on windows 7, behind proxy
I have it working in Windows 10 but I believe it is the same.
When I check the npm folder: C:\Users\(YourName)\AppData\Roaming\npm
The command name is foundation instead of foundation-apps
So you should type: foundation new
If you're using fedora-22 and potentially other OSes Siu Pang Tommy Choi's answer is also applicable; that is, replace foundation-apps new NAME with the foundation new NAME.
This is the first time I've encountered this problem, so perhaps there has been a change within the last few versions that has deprecated the foundation-apps command (or else you should consider this a work-around). Just make sure that you correctly specify that you want an 'app' and not a 'site' when prompted.
foundation studios install instructions on the url https://foundation.zurb.com/apps/docs/#!/installation
tells this
"You now have access to the foundation-apps command on your system! You'll use this to set up and update new projects"
Siu Pang Tommy Choi gave the best answer because foundation command worked instead of foundation-apps
still confusing because i am following instructions from the above url.
Are you sure there is no foundation-apps command?
I am trying to get Leiningen and Cygwin working together.
One of the problems I think I have is that I have Java installed in "C:\Program Files\Java..." directory. The space appears to be causing issues.
When I try to run the lein script in Cygwin, I am getting the following error:
./lein: line 325: C:\Program Files\Java\jdk1.8.0_05\bin\java.exe : command not found
Then I thought the issue was the space. So I changed line 325 from:
"$LEIN_JAVA_CMD" \
to (for testing purposes):
"$'C:\\\Program Files\\\Java\\\jdk1.8.0_05\\\bin\\\java.exe'" \
But, I am still getting this error:
./lein: line 325: $'C:\\Program Files\\Java\\jdk1.8.0_05\\bin\\java.exe' : commande introuvable
However, this file clearly exists:
Owner#Owner-PC ~
$ ls -alh $'C:\\Program Files\\Java\\jdk1.8.0_05\\bin\\java.exe'
-rwxr-xr-x 1 Owner None 187K 8 mai 15:39 C:\Program Files\Java\jdk1.8.0_05\bin\java.exe
The lein script appears to be properly configuring Leiningen for Cygwin, however I can't get it to work.
Note that I previously installed Leiningen outside of Cygwin (I was running it in Windows' normal shell).
What could be wrong with my setup, any ideas?
I use Leiningen via Cygwin with no problems.
Start over
Start over with a fresh copy of the lein script. There should be no need to edit it.
Set your PATH to include java
The easiest solution is to set your path in ~/.profile to include the path to Java's bin directory. Lein will then find java on the path and you'll have access to java and its related tools in your shell.
export JAVA_HOME="/cygdrive/c/Program Files/Java/jdk1.8.0_05/"
export PATH="${JAVA_HOME}/bin/:${PATH}"
Restart your shell or source ~/.profile. Verify that which java finds java command. And run java to verify you get the help output.
And/or explicitly set the LEIN_JAVA_CMD and JAVA_CMD variables
Alternatively, set the LEIN_JAVA_CMD and JAVA_CMD variables used by lein in your ~/.profile
export JAVA_HOME="/cygdrive/c/Program Files/Java/jdk1.8.0_05/"
export LEIN_JAVA_CMD="${JAVA_HOME}/bin/java"
export JAVA_CMD=`cygpath -w "${LEIN_JAVA_CMD}"`
Restart your shell or source ~/.profile.
Note: You can also set a separate LEIN_JVM_OPTS and JVM_OPTS if desired, but this should not be necessary.
If you have lein previously installed on Windows and want to reach it from cygwin, then do:
on cmd:
cd C:/Users/%userprofile%/.lein/bin
mklink lein lein.bat
on cygwin:
export CYGWIN=winsymlinks:nativestrict
I feel your pain. I tried something like this myself several years ago.
You have at least two problems. One is getting lein to run as under unix as you noted. There are really two lein scripts - one for unix, the other a batch script for use under windows.
Your bigger problem is java.exe - getting the windows java executable to behave as a cygwin shell, and particular the unix lein script running in a cygwin shell, expects is messy and fragile undertaking.
I would strongly recommend either using a clojure ide that supports Windows (perhaps LightTable) or installing a full linux virtual machine with the unix java SDK and doing clojure development in that environment. Ubuntu running on virtualbox is freely available and an option I have used in the past for just this purpose.
You need to create a symbolic link to the "lein.bat" file.so you use it properly in Cygwin.
Open CMD and go to the ".lein" path (cd %userprofile%\.lein\bin) and run this: mklink lein lein.bat
#a-webb is almost right ,but there are still some steps to complete.First,you will find a folder called “.lein” where you run the lein script in cygwin,go in,copy the folder "self-installs" inside to C:\Users\yourUserName.lein
,then,add C:\Users\yourUserName.lein\bin to the environment variable $Path.
I've found the easiest way is to:
Install via the windows binaries and
Copy the lein bash script into .lein/bin
Then it should just work in cygwin.
I downloaded Clojure 1.2 https://github.com/downloads/clojure/clojure/clojure-1.2.0.zip , extracted it under /Library directory, created CLOJURE_HOME, added $CLOJURE_HOME/script to my $PATH.
When I'm trying to run clj or repl scripts that are located under script directory, I'm getting this error:
Exception in thread "main" java.lang.NoClassDefFoundError: jline/
ConsoleRunner
Caused by: java.lang.ClassNotFoundException: jline.ConsoleRunner
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Ok, jline.jar isn't in the CLASSPATH so I checked clj and repl scripts:
CLASSPATH=src/clj:test:test-classes:classes/:script/jline-0.9.94.jar:../clojure-contrib/target/clojure-contrib-1.2.0-SNAPSHOT.jar
if [ -z "$1" ]; then
exec java -server jline.ConsoleRunner clojure.main
else
SCRIPT=$(dirname $1)
export CLASSPATH=$SCRIPT/*:$SCRIPT:$CLASSPATH
exec java -Xmx3G -server clojure.main "$1" "$#"
fi
I downloaded jline.jar under $CLOJURE_HOME/script but I'm still getting the same error.
This lead me to the question:
What is the role of https://github.com/downloads/clojure/clojure/clojure-1.2.0.zip anyway?
Is it supposed to be used to install Clojure? or just to to build and get clojure.jar?
I noticed no one is talking about installing Clojure this way.
Am I missing something?
Clojure, being a JVM language, has to deal with the JVM classpath. This makes 'installing' it a bit unwieldy and confusing. Rather than install it yourself like this, try out some tools like cljr and cake. I wrote a blog post about this that might be helpful: http://blog.raynes.me/?p=48
In summary: Check out cljr, cake, and leiningen.
The majority of people in the Clojure community don't have Clojure 'installed'. Most people use a build tool and/or cljr. It doesn't make a lot of sense to install Clojure to a central place when, inevitably, you're going to need dependency management, and jars will be copied around everywhere anyway. In any case, it's much easier to let a tool handle the classpath for you.
the clojure.zip file exists so people who write tools will have a place for their tools to get the parts they need ;)
For people not writing tools they are either working on/with the latest branch from github and so they get Clojure with a git pull or they are using the above mentioned liningen, cake, cljr , counterclockwise(eclipse), la clojure (intellij), or netbeans.