# Non-standard maven repo pain with deps (dcm4che)
**URL:** https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795
**Category:** Troubleshooting
**Tags:** deps-edn
**Created:** [December 9, 2025, 7:48pm UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795 "2025-12-09T19:48:48Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@jdf](https://clojureverse.org/u/jdf)
#### Post date: [December 9, 2025, 7:48pm UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/1 "2025-12-09T19:48:48Z")
Hi everyone,
I’m trying to use the DICOM library [dcm4che](https://web.dcm4che.org/) from Clojure and am getting stuck at the first step!
With the following `deps.edn` (macOS 15.7.2 on intel, clojure 1.12.3.1577 via brew):
```auto
{:mvn/repos {"dcm4che" {:url "https://maven.dcm4che.org"}}
:deps {org.dcm4che/dcm4che-parent {:mvn/version "5.34.1"}}
```
and a completely fresh maven dir `rm -rf ~/.m2`, I run `clj -Stree` and get:
```auto
Downloading: org/clojure/clojure/1.12.3/clojure-1.12.3.pom from central
Downloading: org/clojure/spec.alpha/0.5.238/spec.alpha-0.5.238.pom from central
Downloading: org/clojure/core.specs.alpha/0.4.74/core.specs.alpha-0.4.74.pom from central
Downloading: org/clojure/pom.contrib/1.2.0/pom.contrib-1.2.0.pom from central
Downloading: org/dcm4che/dcm4che-parent/5.34.1/dcm4che-parent-5.34.1.pom from dcm4che
Downloading: org/weasis/core/weasis-core-img-bom/4.11.0/weasis-core-img-bom-4.11.0.pom from nroduit-mvn-repo-master
Downloading: org/clojure/clojure/1.12.3/clojure-1.12.3.jar from central
Downloading: org/clojure/core.specs.alpha/0.4.74/core.specs.alpha-0.4.74.jar from central
Downloading: org/clojure/spec.alpha/0.5.238/spec.alpha-0.5.238.jar from central
Error building classpath. Could not find artifact org.dcm4che:dcm4che-parent:jar:5.34.1 in central (https://repo1.maven.org/maven2/)
```
Why is it looking for the `dcm4che-parent` jar in `central` rather than the specificed maven repo? I had a look at the pom file [in the correct repo](https://maven.dcm4che.org/org/dcm4che/dcm4che-parent/5.34.1/); it seemed plausible to my non-maven-expert eyes.
(I found this [similar post](https://v2.clojureverse.org/t/difference-between-deps-edn-and-leiningen-wrt-repositories/8677), but couldn’t adapt it to this problem. This [maven-oriented post](https://stackoverflow.com/questions/78754993/adding-dcm4che-5-library-to-java-project-using-intellij-and-maven) didn’t help either.)
---
### Author:  [@p-himik](https://clojureverse.org/u/p-himik)
#### Post date: [December 9, 2025, 8:19pm UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/2 "2025-12-09T20:19:29Z")
The JAR was not found in the `dcm4che` repo - there are only POM files there. So `tools.deps` continued the search in the default repos, and couldn’t find the JAR there either.
The reason for there being nor JAR is that that POM has `pom`. And that type of packaging is not currently supported by `tools.deps`.
In order to use the relevant library from Clojure, I’d just specify dependencies on the exact libraries that you need. Those can be found under `` in that POM. You might need all of them, or you might need just a few.
---
### Author:  [@seancorfield](https://clojureverse.org/u/seancorfield)
#### Post date: [December 9, 2025, 9:50pm UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/3 "2025-12-09T21:50:42Z")
You can vote for [Add support for BOM (Bill Of Materials) dependencies - Clojure Q&A](https://ask.clojure.org/index.php/10892/add-support-for-bom-bill-of-materials-dependencies) to help prioritize the underlying Jira issue TDEPS-202.
---
### Author:  [@jdf](https://clojureverse.org/u/jdf)
#### Post date: [December 10, 2025, 11:57pm UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/4 "2025-12-10T23:57:27Z")
Thank you!
I get
```auto
Downloading: org/dcm4che/dcm4che-core/5.34.2/dcm4che-core-5.34.2.pom from dcm4che
Error building classpath. Failed to read artifact descriptor for org.dcm4che:dcm4che-core:jar:5.34.2
org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.dcm4che:dcm4che-core:jar:5.34.2
```
with
```clojure
{:mvn/repos {"dcm4che" {:url "https://maven.dcm4che.org/"}}
:deps {org.dcm4che/dcm4che-core {:mvn/version "5.34.2"}}}
```
which presumably uses [this directory](https://maven.dcm4che.org/org/dcm4che/dcm4che-core/5.34.2/). Will keep chipping away at it.
---
### Author:  [@p-himik](https://clojureverse.org/u/p-himik)
#### Post date: [December 11, 2025, 7:53am UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/5 "2025-12-11T07:53:56Z")
The error that you quote is a symptom. The actual error is mentioned in its cause:
```auto
Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Could not find artifact org.dcm4che:dcm4che-parent:pom:5.34.2 in central (https://repo1.maven.org/maven2/)
```
To double-check:
```bash
$ cat ~/.m2/repository/org/dcm4che/dcm4che-core/5.34.2/dcm4che-core-5.34.2.pom | grep \
dcm4che-parent
org.dcm4che
5.34.2
```
Checking further:
```bash
$ curl -s https://maven.dcm4che.org/org/dcm4che/dcm4che-parent/ | grep 5\\.34
5.34.0/ 23-Jun-2025 15:59 -
5.34.1/ 16-Sep-2025 12:31 -
```
Huh! So there’s a 5.34.2 version published, but the `dcm4che-parent` isn’t a part of that release for some reason. At least, it’s missing from the Maven repo. So I’d say that version is currently broken.
Let’s try with the previous version:
```bash
clj -Sdeps '{:mvn/repos {"dcm4che" {:url "https://maven.dcm4che.org/"}} :deps {org.dcm4che/dcm4che-core {:mvn/version "5.34.1"}}}'
Downloading: org/dcm4che/dcm4che-core/5.34.1/dcm4che-core-5.34.1.pom from dcm4che
Downloading: org/dcm4che/dcm4che-parent/5.34.1/dcm4che-parent-5.34.1.pom from dcm4che
Downloading: org/weasis/core/weasis-core-img-bom/4.11.0/weasis-core-img-bom-4.11.0.pom from nroduit-mvn-repo-master
Downloading: org/dcm4che/dcm4che-dict/5.34.1/dcm4che-dict-5.34.1.pom from dcm4che
Downloading: org/dcm4che/dcm4che-dict/5.34.1/dcm4che-dict-5.34.1.jar from dcm4che
Downloading: org/dcm4che/dcm4che-core/5.34.1/dcm4che-core-5.34.1.jar from dcm4che
Clojure 1.12.0
user=>
```
🎉 🎉 🎉
---
### Author:  [@jdf](https://clojureverse.org/u/jdf)
#### Post date: [January 3, 2026, 3:03am UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/6 "2026-01-03T03:03:03Z")
Thanks so much for this. It seems to have [happened before](https://stackoverflow.com/questions/78754993/adding-dcm4che-5-library-to-java-project-using-intellij-and-maven) with that project!
---
### Author:  [@system](https://clojureverse.org/u/system)
#### Post date: [July 4, 2026, 3:03pm UTC](https://clojureverse.org/t/non-standard-maven-repo-pain-with-deps-dcm4che/14795/7 "2026-07-04T15:03:11Z")
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