Wrong opencv-native version?

[weidtn]

When running my clojure file for the first time it tries to download a wrong opencv-native version i think:

Error building classpath. Could not find artifact opencv:opencv-native:jar:4.5.1-0 in central (https://repo1.maven.org/maven2/)

2.4.6.1 is the only one I find.

[hellonico]

what project.clj are you using ?

[hellonico]

opencv-native is hosted here: http://repository.hellonico.info/#browse/browse:hellonico:opencv%2Fopencv-native

You should have somewhere a reference to that repository:

    :repositories [["vendredi" {:url "https://repository.hellonico.info/repository/hellonico/"}]

It's in the templates by default.

[hellonico]

We can do a zoom/googlemeet or chat on slack https://origami-hyj7796.slack.com/archives/C02B4N0E1TR

To get you started ASAP

[weidtn]

I just started a new project with clj-new then added this to the deps.edn:

:deps {org.clojure/clojure {:mvn/version "1.10.1"}
          origami/origami {:mvn/version "4.5.1-7"}

Then when running the project with clj -M -m name.clj it starts downloading the dependencies but shows the error from before

[hellonico]

Ah ... clj does not download the deps the way lein/maven do it. You can take example from this deps.edn:

https://github.com/hellonico/origami_samples/blob/master/deps.edn

{:mvn/repos
 {
    "vendredi" {:url "https://repository.hellonico.info/repository/hellonico/"}
 }
 :deps { 
        origami {:mvn/version "4.5.1-6"}
        origami/filters {:mvn/version "1.29"}

    ; using master 
    ; origami {:git/url "https://github.com/hellonico/origami" :deps/manifest :mvn :sha "816ad908efac02050581f46a1763e1f98ce0695e"}

    ; origami {:mvn/version "4.3.0-6" :exclusions [opencv/opencv-native]}
    ; opencv/opencv-native {:mvn/version "4.3.0-6" :classifier "osx_64"}
    ; opencv/opencv-native {:mvn/version "4.3.0-6" :classifier "limux_64"}
    ; opencv/opencv-native {:mvn/version "4.3.0-6" :classifier "windows_64"}
        }
}

or simply

{:mvn/repos
 {
    "vendredi" {:url "https://repository.hellonico.info/repository/hellonico/"}
 }
 :deps { 
        origami {:mvn/version "4.5.1-6"}
        origami/filters {:mvn/version "1.29"}
        }
}

[weidtn]

That works. Thanks. Maybe you can add this as a snippet in the readme for clj-cli users?

:mvn/repos
 {
    "vendredi" {:url "https://repository.hellonico.info/repository/hellonico/"}
 }

I did not find the examples as they are in another repo that appears to not be linked in here.

[hellonico]

Should be in the docs already: http://origamidocs.hellonico.info/#/units/guide?id=_2-minutes-intro-using-clj

But maybe hard to find... :/

[hellonico]

Supposing you have the new alias setup in (~/.clojure/deps.edn)

:aliases
 {:new {:extra-deps {com.github.seancorfield/clj-new {:mvn/version "1.1.331"}}
        :exec-fn clj-new/create
        :exec-args {:template "app"}}}

This is the command to generate a project with the template:

clojure -X:new :template clj-opencv :name hellonico/origami :force true

Then

cd hellonico/origami
clj 

Within the REPL:

(->
 (imread "resources/lena.png")
 (cvt-color! COLOR_RGB2GRAY)
 (canny! 300.0 100.0 3 true)
 (bitwise-not!)
 (u/resize-by 0.5)
 (imwrite "lena.png"))

Could you try it and see if it works for you ? Then I will add that in the http://origamidocs.hellonico.info/

[HLevering]

@hellonico thank you for making this library. This is topic is solved, however I have a general question: Is there a special reason, why you use your own maven repository. Are there any advantages over uploading it to maven central under your own organisation id (e.g. hellonico/open-cv-native)? Since the claim of origami is the "Lowest barrier of entry ", this would be one step less required to start. Just include the origami dependency and start using it :)

[hellonico]

i had numerous problems in the past ... but in 2022, that would be awesome ！ wanna help ？