I am setup s3-wagon-private to deploy some private packages in my company

how can I have access to these repo in other packages?

https://clojure.org/reference/deps_and_cli#_maven_s3_repos

thnaks @alexmiller I'll read it asap

Is anybody familiar with compojure-api?

I'm trying to run it, but it's crashing immediately with Call to clojure.core/fn did not conform to spec. I haven't changed a line of code yet.

@bolivier Sounds like you have an outdated version of some library in your stack.

compojure-api is widely used and works well. Can you share your project.clj if you're using Leiningen?

How to import relative path file in clojure

(defn read-file [fname]
  (io/resource fname)
  (with-open [rdr (io/reader fname)]
    (into [] (line-seq rdr))))

Seem it’s depend where i run repl

(defproject invyte "0.1.0-SNAPSHOT"
   :description "FIXME: write description"
   :dependencies [[org.clojure/clojure "1.8.0"]
                  [metosin/compojure-api "1.1.11"]]
   :ring {:handler invyte.handler/app}
   :uberjar-name "server.jar"
   :profiles {:dev {:dependencies [[javax.servlet/javax.servlet-api "3.1.0"]
                                  [cheshire "5.5.0"]
                                  [ring/ring-mock "0.3.0"]]
                   :plugins [[lein-ring "0.12.0"]]}})

there should be more to the message that points to a place in the code?

unfortunately, I'm not sure what to make of it

so that's in org.clojure/core.unify lib

not sure what's pulling that in - there are probably 60+ transitive deps from that project

lein deps :why org.clojure/core.unify will tell you the dep path

unify spec errors were fixed in 0.5.7

that command is blank

well, returns nothing

might be coming in through a plugin or some other global profile

adding [org.clojure/core.unify "0.5.7"] could potentially workaround it, depends how much you're interested in figuring out the real why vs moving forward right now

lein deps :plugin-tree shows plugin tree deps

(I'm referencing https://archive.clojure.org/design-wiki/display/design/Errors%2Bfound%2Bwith%2Bcore%2Bspecs.html for errors found with spec btw)

the real why is, I'm sure, interesting, but I'm pretty new and would probably be better off just moving forward

I wish the beginner docs didn't tell people to use lein-ring but instead taught people how to start Jetty directly in their app, so they could just lein run instead...

I don't see core.unify coming in from any of those deps @bolivier -- what do you have in ~/.lein/profiles.clj? I suspect that's more likely to be your problem.

(there are certainly plenty of version conflicts in the deps you have in project.clj which is a problem in itself -- but it's not causing that error)

(as an aside, you will also probably find the error experience better with lein ring / lein run when using Clojure 1.10.1-RC1, to be actually released in the next week or two)

@bolivier I updated your project.clj to use Clojure 1.10.1 and couldn't repro that error message -- so I'm fairly sure it's in your ~/.lein/profiles.clj instead.

@seancorfield I don't have a ~/.lein/profiles.clj, and when I updated to 1.10.1, I get what looks like the same error still

That's weird. I can't repro that here. I don't even see core.unify pulled in from those dependencies...

You're on Mac/Linux, right @bolivier?

If you run lein deps :tree |wc what does that produce?

(I'm expecting 71)

I'm on linux

I get a lot of output, oddly enough

but it ends in 71 164 2978

so I think that's probably expected

Well, yeah, there's all the dependency conflicts...

Something in your deps is pulling in leinjacker and that's where the problem is -- it's pulling in an old version of core.unify.

If you add [org.clojure/core.unify "0.5.7"] to your project.clj I think you might get past this.

(but, frankly, at this point I think I'd recommend looking at clj/`deps.edn` instead of Leiningen so that you're working with something simpler)

Are you absolutely sure you don't have a profiles.clj file @bolivier?

I just checked and leinjacker is not involved in any of those dependencies -- you must have a profiles.clj file pulling in additional dependencies @bolivier

Could it be in a different place?

What's in ~/.lein?

I have a ~/.lein dir, but it's empty

Really? That's just weird.

Is there a way I can quickly purge all the deps and re fetch them?

What does lein deps | fgrep leinjacker show?

or lein deps 2&>1 | fgrep leinjacker

Couldn't find project.clj, which is needed for deps

You must have project.clj for this.

You can't be doing any of this without a project.clj file...

could it have been deleted?

It's in your project directory.

You can't run lein without that file.

oh, I didn't realize you meant for me to run int in the projects dir

the project dir has a project.clj

and that command has no output

Well, of course. That's the project you're having problems with...

just a silly mix up

At this point, I have absolutely no idea. The errors you're reporting can't happen based on what you've told us.

Well, thanks for trying to help me out

None of the dependencies from your project.clj can produce that error.

The only way those errors can be produced is from a .lein/profiles.clj file in your home directory.

Are you on Windows?

I'm running Linux

Hmm... then I have no idea. Sorry. Your errors make no sense at all 😞

I would suggest creating a very basic new project and seeing if you can get it running, and then adding dependencies one at a time until it fails.

I deleted ~/.m2, figuring some of the java libs might be stored there, and it's definitely fetching leinjacker again

I have no idea why -- nothing in your dependencies needs leinjacker

Are your sure you don't have a .lein folder in your home directory?

I do have one, but it's empty

At this point, I hate to say it, but I just don't believe you.

The error you're reporting cannot be produced from the project file you provided.

I understand that, but I don't see anything in that directory

What would be the fix assuming there was a ~/.lein/profiles.clj?

if you can speculate

The fix would be removing the dependencies that are bringing in the problematic libraries.

I created a project like this

seanc@DESKTOP-QU2UJ1N:~/clojure/brandon$ cat project.clj
(defproject invyte "0.1.0-SNAPSHOT"
   :description "FIXME: write description"
   :dependencies [[org.clojure/clojure "1.10.1-beta1"]
                  [metosin/compojure-api "1.1.11"]]
   :ring {:handler invyte.handler/app}
   :uberjar-name "server.jar"
   :profiles {:dev {:dependencies [[javax.servlet/javax.servlet-api "3.1.0"]
                                  [cheshire "5.5.0"]
                                  [ring/ring-mock "0.3.0"]]
                   :plugins [[lein-ring "0.12.0"]]}})
seanc@DESKTOP-QU2UJ1N:~/clojure/brandon$

If I run lein ring server I get this error

Retrieving ring/ring-jetty-adapter/1.6.1/ring-jetty-adapter-1.6.1.jar from clojars
2019-05-22 22:25:16.562:INFO::main: Logging initialized @2584ms
Syntax error (FileNotFoundException) compiling at (/tmp/form-init4402686125591950306.clj:1:73).
Could not locate invyte/handler__init.class, invyte/handler.clj or invyte/handler.cljc on classpath.
Full report at: /tmp/clojure-6013848232846396032.edn
Subprocess failed

(this is why I will not use plugins)

I can run the repl (in a new project with that project.clj) but I cannot run ring server

Right, I can run a REPL but I cannot run lein ring server (and I wouldn't recommend doing that anyway)

I tried it out on my mac, and I had the same problem

but I do have a ~/.lein/profiles.clj there

{:user {:plugins [[cider/cider-nrepl “0.16.0”]]
         :dependencies [[org.clojure/tools.nrepl “0.2.7"]]}}

That's what's in it

I've no idea at this point. Works on my machine.

My recommendation: don't use plugins at all; learn to use clj and deps.edn.

Leiningen has far too much magic, IMO.

For example, tools.nrepl is at 0.2.13 and cider/cider-nrepl is at 0.21.0 so you should at least update those and try again @bolivier

(and you probably shouldn't have cider in there at all -- CIDER tries to inject the right version when it starts up anyway)

Hi, I'm a front end developer and recently fallen in love with clojure, Is there any suggestion and recommendation for someone who just want to start.

Clojure for the Brave and True is probably the default recommendation, as something you can follow online

@seancorfield thanks:+1:

I generally recommend either quick clojure or mastering clojure if you don't mind buying the books.

@tensordeveloper thanks I I'm gonna get quick clojure

hello, i want to use the https://github.com/daviferreira/react-sanfona to build my nav, and i write the test code

this is the error msg

i read the readme, and see that the title can be object, it’s that i can define my own component and show it in the title?

is it possible to make the http-kit client return a channel with the result for async calls instead of a promise? I looked through the docs and I couldn't find anything.

Hi , I want to integrate google and FB sign in in my project .... please suggest me some decent libraries for that

Do you remember when I ordered the Purely Functional yearly subscription using my corporation hideous purchasing system? I managed to do it and they approved the order! Yihaa! This is the first course I'm going to watch this evening after my corporate hours: https://purelyfunctional.tv/courses/repl-driven-development-in-clojure/ I'll tell you my first impressions when I have watched the training video.

nice

stick it to the man

I will. 🙂

I just chatted to my line manager today: "Where is my next cool cloud project in which I can create cool infra using Terraform and do some big data processing using Clojure and Spark?"

🙂

I'm really burning to use my new Clojure skills to do some great system in some of the mainstream clouds using Terraform and using Clojure to implement the application logic.

BTW. Since the corporation order process wasn't a never ending story after all, I'm considering to order a couple of other good training sites for my corporate life and for Clojure development in the cloud (AWS, Azure, GCP). Any suggestions? For training my next cloud certification (GCP) I considered https://acloud.guru/ which is highly recommended by some of my corporate colleagues. Any comments?

My line manager told me to do a GCP certification - I thought that as part of my studies I could try to build a simple Dataproc system (GCP Hadoop managed service), use some Google published example big data and do some processing using Clojure Spark library, e.g. Flambo (https://github.com/sorenmacbeth/flambo).

... I guess you got my point - another excuse to use Clojure 🙂

BTW. Are there experiences how different Spark is regarding which library you use (Java, Scala, Python or Clojure)?

I have what could be a very stupid question … but I just wrote what I think is “Hello World” in Clojure but there are an insane amount of directories & documents in my “project.” — I have always heard that Clojure cuts down on the amount of code and makes things simpler — therefore I am worried I did something wrong?

^ Does that look normal?

it looks like you used luminus or similar?

I recommend to delete that project and e.g. download this one: https://github.com/puredanger/demo-deps

I have not idea what that is … but maybe

a leiningen template

You don't need leiningen, luminus etc for learning basic stuff.

here's my basic project layout

I just used the Intellij starter template

Clone the demo-deps project and start adding your own functions there...

Okay. Thanks guys. I will keep at this.

I wouldn't even bother cloning that project

you could just start with a src/hello.clj, and a deps.edn file that is just {} and that's enough

Heh, there you have it - even simpler way to start. 🙂

Can anyone please recommend any up to date Youtube / Udemy / Coursera / Lynda / or Pluralsight videos? —

I am coming from Python so I am very familiar w/ Pycharm & Intellij and would love to stick w/ those editors.

amac:tmp alex$ mkdir hello
amac:tmp alex$ cd hello
amac:hello alex$ echo "{}" > deps.edn
amac:hello alex$ mkdir src
amac:hello alex$ echo "(ns hello)" > src/hello.clj
amac:hello alex$ clj
Clojure 1.10.0
user=> (require 'hello)
nil

I'm using Cursive with IntelliJ IDEA and I'm very happy with them.

boom, a project!

you can import that project in Cursive as a deps.edn project and go from there

See: https://cursive-ide.com/ => Very good instructions how to use Cursive.

If you have some issues with how to configure Cursive with deps.edn or something like that - chat here - we help you.

(or cursive specific questions in #cursive)

Yep, sorry for forgetting that. #cursive is the place for those questions.

this slack is totally the place to go to get help, lots of friendly faces about

cfleming - the creator of Cursive - is very helpful there.

And if you buy a commercial Cursive license and have any issues related to Cursive - he responds very quickly to your emails and provides excellent support. I have used the support only once and it was amazingly fast and solved my issue right away. Used support only once since Cursive is very stable and intuitive.

Many corporate employees have subscriptions in Pluralsight (https://app.pluralsight.com). There are just a couple of Clojure courses (pretty old). A hint for Clojure gurus - why not create some learning material in Pluralsight (and possibly make some money).

the (old) courses are probably still relevant btw

I'm struggling to create a test that effectively tests atom watch functions. I have to create a new atom each time and use swap! in order to fire the function. Is there a better way?

@david.folkner Seems reasonable. Though remember your watch function is just a normal function, so you can test it independently of actually attaching (add-watch ...) it to a atom.

Ahh...good point! It has a swap! in it though, so it gets a little messy.

If you are swap!'ing on the ref that add-watch calls your watcher function with, then that can get kind of complicated. I would consider if there is a way to do what you need without that pattern?

I'm trying to "require" reagent.core in a bare bones clojurescript program but getting a compile error: Caused by: clojure.lang.ExceptionInfo: No such namespace: reagent.core, could not locate reagent/core.cljs, reagent/core.cljc, or JavaScript source providing "reagent.core" in file /repos/gitnc/clojurescript_test2/src/demo/static_website.cljs {:tag :cljs/analysis-error} . What do I need to do to make "reagent.core" locatable?

@davecompton7 have you added the reagent library to your projects dependencies, and restarted the ClojureScript build process?

no. How do I add the reagent library to my project's dependencies?

which tool are you using to run your build? lein?

clj

my starting point was this guide : https://betweentwoparens.com/deoploy-clojurescript-to-github-pages

in your deps.edn, add to your :deps map reagent {:mvn/version "0.8.1"}

I found this on their clojars page: https://clojars.org/reagent which was linked to on their github: https://github.com/reagent-project/reagent

Thanks! That did it.

Does anyone know if I can provide a seed to generate values using spec? For example I can run: (-> int? s/gen g/generate), which generates a random integer. But I’d like to generate an integer based on a seed (so I can reproduce it)

clojure.spec.test.alpha uses test.check under the hood, which accepts a :seed keyword arg to check and quick-check

it also returns a seed that was used when a failed case is generated

Ah but that seed is used to re-run a failing test then

But not to actually generate values for other purposes, at least that’s what it looks like to me

it tells you what seed it was using when it failed, so you can use that seed to reproduce the failure

nothing stops you from inventing arbitrary seeds and feeding them to the test

but it's already randomizing its starting state, so I don't know when you'd need that

Ahh [org.clojure/test.check "0.10.0-alpha4"] seems to have a generate function that accepts a seed, 0.9.0 didn’t accept one

Thanks for the help!

I'm getting going with web development with clojure and luminus. I have things running in dev locally in my repl. How do I inspect the requests as they come through? I currently put println statements in the functions I care about.

@david.folkner println debugging is a perfectly reasonable approach. Are you looking for a way to print all requests? You could write simple middleware for that (there may even be such a thing in a library out there somewhere).

(defn print-mw [handler]
  (fn [req]
    (println "request:" req)
    (let [resp (handler req)]
      (println "response:" resp)
      resp)))

Gotcha. that's perfect. Thanks. All, would be a bit much, just wanted to inspect data and states...`pprint` it is!

if you want less, just filter those maps with select-keys, etc

I'm trying to use the "-w" option to get a recompile to happen every time my source file changes but it does not seem to be working.

the -w option to what?

sorry.... the -w option to cljs.main

here's the command line that I've tried: rm -rf demo-clojurescript-gh-pages/; clj -m cljs.main -d "demo-clojurescript-gh-pages/out" -c demo.static-website -w demo

the source file is src/demo/static_website.cljs

I've tried other options for the path: "demo", "src/demo", "src"

but in every case the command builds successfully once and then exits.

what makes you think cljs.main takes a '-w' argument?

from cljs.main --help output : -w, --watch paths Continuously build, only effective with the --compile main option. Specifies a system- dependent path-separated list of directories to watch.

that's contained in the output from : clj -m cljs.main --help

am I misinterpreting that?

I think you have to specify -w before -c

https://github.com/clojure/clojurescript/blob/9a8196ebfe4265feda88a06de84affb9df469012/src/main/clojure/cljs/cli.clj#L625-L640 looks like it stops processing args when -c is encountered

I think that's working.