# Packages have unmet dependencies: curl : Depends: libcurl4

**URL:** <https://travis-ci.community/t/packages-have-unmet-dependencies-curl-depends-libcurl4/11076>\
**Category:** Travis CI Discussions & Feedback\
**Created:** [January 24, 2021, 11:14pm UTC](https://travis-ci.community/t/packages-have-unmet-dependencies-curl-depends-libcurl4/11076 "2021-01-24T23:14:09Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![native-api](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/native-api/32/430_2.png) [@native-api](https://travis-ci.community/u/native-api)\
**Post date:** [January 26, 2021, 3:52pm UTC](https://travis-ci.community/t/packages-have-unmet-dependencies-curl-depends-libcurl4/11076/14 "2021-01-26T15:52:58Z")

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> [@Build suddenly starting to error out - unmet package dependencies](https://travis-ci.community/t/build-suddenly-starting-to-error-out-unmet-package-dependencies/8182/5):
>
> Run the same apt invocation manually, adding -o Debug::pkgProblemResolver=yes to it. This will show which packages are conflicting with those that you are installing. Usually, this error means that some of the preinstalled conflicting dependency packages have been installed manually and as such, they aren’t being replaced automatically unless you explicitly specify a corresponding replacement dependency. E.g. this has happened before in

> [@mccannm1](#):
>
> Just on the manual apt invocation?

On the `apt` invocation that fails.

* * *

From the build log, the culprit is `libcurl3` that you’re installing. It conflicts with `libcurl4` that’s required by `curl`.

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_[View the full topic](https://travis-ci.community/t/packages-have-unmet-dependencies-curl-depends-libcurl4/11076)._