title: Problem with installing RQDA package since it was archived 20/05/2020
body: <p>I receive an error when installing RQDA on Windows 10.
  I had run RQDA successfully, then a package wouldn't load and I deleted and tried to reinstall RQDA with these instructions: <a href="http://rqda.r-forge.r-project.org/" rel="nofollow noreferrer">http://rqda.r-forge.r-project.org/</a>.
  Since then, I receive errors pointing towards RGtk2 and GTK+.
  I tried loading RQDA both using the newest and older versions of R and RStudio. I tried on 3 different Windows computers.</p>
  
  <p>Here is the link that shows the RQDA package was recently archived:
  <a href="https://cran.r-project.org/web/packages/RQDA/index.html" rel="nofollow noreferrer">https://cran.r-project.org/web/packages/RQDA/index.html</a>
  The archive points towards requiring gWidgets, so I made sure the library of gWidgets loads successfully, which it does, as does library(gWidgetsRGtk2). 
  I also took care to install RTools4.0 for R 4.0.0 (<a href="https://cran.r-project.org/bin/windows/Rtools/" rel="nofollow noreferrer">https://cran.r-project.org/bin/windows/Rtools/</a>). </p>
  
  <p>I made sure GTK+ is on my PATH. (Path: %GTK_BASEPATH%\bin;) (GTK_PATH: C:\GTK).</p>
  
  <p>I also tried loading RQDA and dependencies manually, but that's a never ending process.</p>
  
  <p>Here is the error I receive: </p>
  
  <pre><code>Failed to load RGtk2 dynamic library, attempting to install it. 
  Please install GTK+ from http://ftp.gnome.org/pub/gnome/binaries/win64/gtk+/2.22/gtk+-bundle_2.22.1-20101229_win64.zip
  If the package still does not load, please ensure that GTK+ is installed and that it is on your PATH environment variable
  IN ANY CASE, RESTART R BEFORE TRYING TO LOAD THE PACKAGE AGAIN
  Error in getOption("encoding") : Knotenstack-Überlauf
  Zusätzlich: Warnmeldung:
  Failed to load RGtk2 dynamic library, attempting to install it. 
  Please install GTK+ from http://ftp.gnome.org/pub/gnome/binaries/win64/gtk+/2.22/gtk+-bundle_2.22.1-20101229_win64.zip
  If the package still does not load, please ensure that GTK+ is installed and that it is on your PATH environment variable
  IN ANY CASE, RESTART R BEFORE TRYING TO LOAD THE PACKAGE AGAIN
  Error: package or namespace load failed for 'RGtk2':
   .onLoad in loadNamespace() für 'RGtk2' fehlgeschlagen, Details:
    Aufruf: NULL
    Fehler: Knotenstack-Überlauf
  Fehler: Paket 'RGtk2' konnte nicht geladen werden
  Zusätzlich: Warnmeldung:
  Failed to load RGtk2 dynamic library, attempting to install it. 
  Ausführung angehalten
  ERROR: lazy loading failed for package 'RQDA'
  * removing 'C:/Users/haunschild/Documents/R/win-library/4.0/RQDA'
  Warning in install.packages :
    installation of package ‘RQDA_0.3-1.tar.gz’ had non-zero exit status
  </code></pre>
  
  <p>Trying to install RGtk2, I receive the following:</p>
  
  <pre><code>Error in inDL(x, as.logical(local), as.logical(now), ...) : 
    kann shared object 'C:/Users/haunschild/Documents/R/win-library/4.0/RGtk2/libs/x64/RGtk2.dll' nicht laden:
    LoadLibrary failure:  %1 ist keine zulässige Win32-Anwendung.
  
  versuche URL 'http://ftp.gnome.org/pub/gnome/binaries/win64/gtk+/2.22/gtk+-bundle_2.22.1-20101229_win64.zip'
  Content type 'application/zip' length 25830230 bytes (24.6 MB)
  downloaded 24.6 MB
  
  Learn more about GTK+ at http://www.gtk.org
  If the package still does not load, please ensure that GTK+ is installed and that it is on your PATH environment variable
  IN ANY CASE, RESTART R BEFORE TRYING TO LOAD THE PACKAGE AGAIN
  Lade nötiges Paket: cairoDevice
  Warnmeldungen:
  1: Failed to load RGtk2 dynamic library, attempting to install it. 
  2: In dir.create(config_path, recursive = TRUE) :
    'C:\Users\haunschild\Documents\R\win-library\4.0\RGtk2\gtk\x64\etc\gtk-2.0' existiert bereits
  &gt; detach("package:RGtk2", unload = TRUE)
  Fehler: Paket ‘RGtk2’ wird von ‘gWidgetsRGtk2’ benötigt, wird deshalb nicht detached ("Is needed by gWidgetsRGTk2', is therefore not detached")
  &gt; library(RGtk2)
  </code></pre>
  
  <p>I also tried: </p>
  
  <pre><code>pkgFile &lt;- "RQDA_0.3-1.tar.gz"
  download.file(url = url, destfile = pkgFile)
  
  # Install dependencies
  
  install.packages(c("DBI","RSQLite","RGtk2","gWidgets","gWidgetsRGtk2"))
  
  # Install package
  install.packages(pkgs=pkgFile, type="source", repos=NULL)
  
  # Delete package tarball
  unlink(pkgFile)
  </code></pre>
  
  <p>An received the same RGTk2 error loop. </p>
  
  <p>Any help would be greatly appreciated! Thanks!</p>