# ERROR: \[...\] is not satisfied, cannot generate deps.jl! when building after a Pkg.update()

**URL:** <https://discourse.julialang.org/t/error-is-not-satisfied-cannot-generate-deps-jl-when-building-after-a-pkg-update/34953>\
**Category:** General Usage\
**Created:** [February 21, 2020, 7:40am UTC](https://discourse.julialang.org/t/error-is-not-satisfied-cannot-generate-deps-jl-when-building-after-a-pkg-update/34953 "2020-02-21T07:40:55Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ElectronicTeaCup](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/electronicteacup/32/12647_2.png) [@ElectronicTeaCup](https://discourse.julialang.org/u/ElectronicTeaCup)\
**Post date:** [February 21, 2020, 7:40am UTC](https://discourse.julialang.org/t/error-is-not-satisfied-cannot-generate-deps-jl-when-building-after-a-pkg-update/34953/1 "2020-02-21T07:40:55Z")

</div>

I’m getting this kind of error on a couple of dependencies of a package (MAT.jl). I get an idea from the error that the requirements for the package aren’t fulfilled—but these packages weren’t updated recently. Can anyone point me into the direction of what I can do?

```julia
  Building CodecZlib → `~/.juliapro/JuliaPro_v1.2.0-2/packages/CodecZlib/5t9zO/deps/build.log`
┌ Error: Error building `CodecZlib`: 
│ ERROR: LoadError: LibraryProduct(nothing, ["libz"], :libz, "Prefix(/home/ahassan/.juliapro/JuliaPro_v1.2.0-2/packages/CodecZlib/5t9zO/deps/usr)") is not satisfied, cannot generate deps.jl!
│ Stacktrace:
│ [1] error(::String) at ./error.jl:33
│ [2] #write_deps_file#171(::Bool, ::Bool, ::typeof(write_deps_file), ::String, ::Array{LibraryProduct,1}) at /home/buildbot/build-worker/worker/juliapro-release-centos7-0_6/build/tmp_julia/share/julia/stdlib/v1.2/BinaryProvider/src/Products.jl:419
│ [3] (::getfield(BinaryProvider, Symbol("#kw##write_deps_file")))(::NamedTuple{(:verbose,),Tuple{Bool}}, ::typeof(write_deps_file), ::String, ::Array{LibraryProduct,1}) at ./tuple.jl:0
│ [4] top-level scope at /home/ahassan/.juliapro/JuliaPro_v1.2.0-2/packages/CodecZlib/5t9zO/deps/build.jl:93
│ [5] include at ./boot.jl:328 [inlined]
│ [6] include_relative(::Module, ::String) at ./loading.jl:1094
│ [7] include(::Module, ::String) at ./Base.jl:31
│ [8] include(::String) at ./client.jl:431
│ [9] top-level scope at none:5
│ in expression starting at /home/ahassan/.juliapro/JuliaPro_v1.2.0-2/packages/CodecZlib/5t9zO/deps/build.jl:78
└ @ Pkg.Operations /home/buildbot/build-worker/worker/juliapro-release-centos7-0_6/build/tmp_julia/share/julia/stdlib/v1.2/Pkg/src/Operations.jl:1138

```