# Can't install Gadfly - unsatisfiable requirements detected

**URL:** https://discourse.julialang.org/t/cant-install-gadfly-unsatisfiable-requirements-detected/22205
**Category:** New to Julia
**Created:** [March 22, 2019, 3:15pm UTC](https://discourse.julialang.org/t/cant-install-gadfly-unsatisfiable-requirements-detected/22205 "2019-03-22T15:15:08Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![Mattriks](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mattriks/32/351_2.png) [@Mattriks](https://discourse.julialang.org/u/Mattriks)
#### Post date: [April 29, 2019, 10:17am UTC](https://discourse.julialang.org/t/cant-install-gadfly-unsatisfiable-requirements-detected/22205/10 "2019-04-29T10:17:30Z")

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or `add StatsBase@0.29`

The explanation (as I understand it) is that if you have a package B (e.g. `StatsBase`) installed independently in your environment that package A (e.g. `Gadfly`) depends on, then package B in your environment needs to match package A’s [Project.toml](https://github.com/GiovineItalia/Gadfly.jl/blob/master/Project.toml). @kristoffer.carlsson might want to elaborate.

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