# ERROR: Unsatisfiable requirements detected for package FactCheck \[01605889\]
**URL:** https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214
**Category:** General Usage
**Tags:** package
**Created:** [August 30, 2019, 4:49pm UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214 "2019-08-30T16:49:03Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@sergevic](https://discourse.julialang.org/u/sergevic)
#### Post date: [August 30, 2019, 4:49pm UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214/1 "2019-08-30T16:49:03Z")
I’m trying to install the package `DeterminantalPointProcesses.jl` of alshedivat from Github, but I get the following error message:
> ERROR: Unsatisfiable requirements detected for package FactCheck [01605889]:
> FactCheck [01605889] log:
> ├─possible versions are: [0.0.1-0.0.2, 0.1.0-0.1.2, 0.2.0-0.2.9, 0.3.0-0.3.1, 0.4.0-0.4.3] or uninstalled
> ├─restricted by compatibility requirements with DeterminantalPointProcesses [9d4a7304] to versions: 0.4.3
> │ └─DeterminantalPointProcesses [9d4a7304] log:
> │ ├─possible versions are: 0.0.1 or uninstalled
> │ └─restricted to versions \* by an explicit requirement, leaving only versions 0.0.1
> └─restricted by julia compatibility requirements to versions: uninstalled — no versions left
Any suggestion? I’m using JuliaPro 1.2.
---
### Author:  [@00vareladavid](https://discourse.julialang.org/u/00vareladavid)
#### Post date: [August 30, 2019, 5:05pm UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214/2 "2019-08-30T17:05:10Z")
It seems the problem is that the package author has not registered a Julia 1.0 compatible version of this package. Perhaps you should file an issue on [https://github.com/alshedivat/DeterminantalPointProcesses.jl](https://github.com/alshedivat/DeterminantalPointProcesses.jl)? In the meantime, you should be able to circumvent the resolver with `pkg> add DeterminantalPointProcess#master`.
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### Author:  [@oxinabox](https://discourse.julialang.org/u/oxinabox)
#### Post date: [August 30, 2019, 5:07pm UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214/3 "2019-08-30T17:07:09Z")
For reference:
FactCheck.jl is super old.
It has not ever worked on anything newer than Julia 0.4
But yes, DetermanisticPointProcesses.jl#master no-longer uses it.
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### Author:  [@sergevic](https://discourse.julialang.org/u/sergevic)
#### Post date: [August 30, 2019, 5:23pm UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214/4 "2019-08-30T17:23:35Z")
Thank you to both of you! After I run ` pkg> add DeterminantalPointProcesses#master`, the installation and compiling worked perfectly!
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### Author:  [@theogf](https://discourse.julialang.org/u/theogf)
#### Post date: [December 13, 2019, 1:33pm UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-factcheck-01605889/28214/5 "2019-12-13T13:33:54Z")
Hey!
I was the one doing a PR to get 1.0 compatibility unfortunately the author never made a release for it.
@sergevic if you are interested in improving and maintaining the package, we could contact the author to ask for access to the repo.