Install lme4ord package

lme4ord package is available in GitHub but cannot be installed due to an error:

> library(remotes)
> install_github("stevencarlislewalker/lme4ord")
Downloading GitHub repo stevencarlislewalker/lme4ord@master
Installing 1 packages: ape
essai de l'URL 'https://cran.rstudio.com/bin/macosx/el-capitan/contrib/3.6/ape_5.3.tgz'
Content type 'application/x-gzip' length 2612810 bytes (2.5 MB)
==================================================
downloaded 2.5 MB


The downloaded binary packages are in
/var/folders/1v/rfxtzxc11kj33kb8tg7znw080000gn/T//RtmprjveC6/downloaded_packages
✓  checking for file ‘/private/var/folders/1v/rfxtzxc11kj33kb8tg7znw080000gn/T/RtmprjveC6/remotesda0d258c4827/stevencarlislewalker-lme4ord-5f62664/DESCRIPTION’ (471ms)
─  preparing ‘lme4ord’:
✓  checking DESCRIPTION meta-information ...
─  checking for LF line-endings in source and make files and shell scripts
─  checking for empty or unneeded directories
─  building ‘lme4ord_0.0-3.tar.gz’
 
* installing *source* package ‘lme4ord’ ...
** using staged installation
** R
** inst
** byte-compile and prepare package for lazy loading
Erreur : object ‘sigma’ is not exported by 'namespace:lme4'
Exécution arrêtée
ERROR: lazy loading failed for package ‘lme4ord’
* removing ‘/Library/Frameworks/R.framework/Versions/3.6/Resources/library/lme4ord’
Erreur : Failed to install 'lme4ord' from GitHub:
  (converti depuis l'avis) installation of package ‘/var/folders/1v/rfxtzxc11kj33kb8tg7znw080000gn/T//RtmprjveC6/fileda0d27315707/lme4ord_0.0-3.tar.gz’ had non-zero exit status

The solution is to download the files from GitHub and edit the file NAMESPACE
Locate and delete this line:
importFrom(lme4,sigma)

Then you can install the package using:
install.packages("/path/lme4ord-master", repos=NULL, type="source")

Replacing path with the correct path.

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