text: user2005: When I am trying to install Seurat in R markdown file:
  install.packages("Seurat")
  
  it fails with the following errors:
  Installing package into ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3’
  (as ‘lib’ is unspecified)
  Warning in install.packages :
    dependency ‘proxy’ is not available
  also installing the dependencies ‘igraph’, ‘dtw’, ‘diffusionMap’
  
  trying URL 'https://cran.rstudio.com/src/contrib/igraph_1.2.1.tar.gz'
  
  Content type 'unknown' length 2703426 bytes (2.6 MB)
  
  downloaded 2.6 MB
  
  trying URL 'https://cran.rstudio.com/src/contrib/dtw_1.18-1.tar.gz'
  
  Content type 'unknown' length 849256 bytes (829 KB) downloaded 829 KB trying URL 'https://cran.rstudio.com/src/contrib/diffusionMap_1.1-0.tar.gz'
  
  Content type 'unknown' length 39130 bytes (38 KB)
  downloaded 38 KB
  
  trying URL 'https://cran.rstudio.com/src/contrib/Seurat_2.3.0.tar.gz'
  
  Content type 'unknown' length 846065 bytes (826 KB)
  
  downloaded 826 KB
  * installing *source* package ‘igraph’ ...
  ** package ‘igraph’ successfully unpacked and MD5 sums checked
  installing to /sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/igraph/libs
  ** R
  ** demo
  ** inst
  ** preparing package for lazy loading
  ** help
  *** installing help indices
  ** building package indices
  ** testing if installed package can be loaded
  
  Error in dyn.load(file, DLLpath = DLLpath, ...) :    unable to load shared object '/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/igraph/libs/igraph.so': libicui18n.so.58: cannot open shared object file: No such file or directory
  
  Error: loading failed Execution halted ERROR: loading failed
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/igraph’ Warning in install.packages :   installation of package ‘igraph’ had non-zero exit status
  
  ERROR: dependency ‘proxy’ is not available for package ‘dtw’
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/dtw’ Warning in install.packages :   installation of package ‘dtw’ had non-zero exit status
  
  ERROR: dependency ‘igraph’ is not available for package ‘diffusionMap’
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/diffusionMap’ Warning in install.packages :   installation of package ‘diffusionMap’ had non-zero exit status
  
  ERROR: dependencies ‘igraph’, ‘dtw’, ‘diffusionMap’ are not available for package ‘Seurat’
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/Seurat’ Warning in install.packages :   installation of package ‘Seurat’ had non-zero exit status
  
  How could it be fixed? What to try?
  Operating system is CentOS Linux release 7.3.1611 (Core)
  
  Update
  
  I also tried development version of Seurat but it failed too:
  http://satijalab.org/seurat/devinstall.html
  
  Update
  
  I tried installing Seurat using conda install -c bioconda r-seurat and it is not working. It is giving the error:
  
  -bash-4.2$ conda install -c bioconda r-seurat 
    Fetching package metadata .............
    Solving package specifications: 
  PackageNotFoundError: Packages missing in current channels:
  
  
  r-seurat -> r-cowplot
  r-seurat -> r-diffusionmap
  r-seurat -> r-dtw
  r-seurat -> r-ggridges
  r-seurat -> r-ica
  r-seurat -> r-pbapply
  r-seurat -> r-ranger
  r-seurat -> r-rcppprogress
  r-seurat -> r-sdmtools
  r-seurat -> r-tclust
  
  
  We have searched for the packages in the following channels:
  
  
  https://conda.anaconda.org/bioconda/linux-64
  https://conda.anaconda.org/bioconda/noarch
  https://repo.continuum.io/pkgs/main/linux-64
  https://repo.continuum.io/pkgs/main/noarch
  https://repo.continuum.io/pkgs/free/linux-64
  https://repo.continuum.io/pkgs/free/noarch
  https://repo.continuum.io/pkgs/r/linux-64
  https://repo.continuum.io/pkgs/r/noarch
  https://repo.continuum.io/pkgs/pro/linux-64
  https://repo.continuum.io/pkgs/pro/noarch
  
  
  user77: As @terdon mentioned in the comments, you need to sudo yum install libicu on the relevant nodes (or have your admin do that for you). Alternatively, seurat can be installed via conda, which means you don't need root access.
  
original_text: 2005: <p>When I am trying to install <code>Seurat</code> in <code>R markdown file</code>:</p>
  
  <pre><code>install.packages("Seurat")
  </code></pre>
  
  <p>it fails with the following errors:</p>
  
  <pre><code>Installing package into ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3’
  (as ‘lib’ is unspecified)
  Warning in install.packages :
    dependency ‘proxy’ is not available
  also installing the dependencies ‘igraph’, ‘dtw’, ‘diffusionMap’
  
  trying URL 'https://cran.rstudio.com/src/contrib/igraph_1.2.1.tar.gz'
  
  Content type 'unknown' length 2703426 bytes (2.6 MB)
  
  downloaded 2.6 MB
  
  trying URL 'https://cran.rstudio.com/src/contrib/dtw_1.18-1.tar.gz'
  
  Content type 'unknown' length 849256 bytes (829 KB) downloaded 829 KB trying URL 'https://cran.rstudio.com/src/contrib/diffusionMap_1.1-0.tar.gz'
  
  Content type 'unknown' length 39130 bytes (38 KB)
  downloaded 38 KB
  
  trying URL 'https://cran.rstudio.com/src/contrib/Seurat_2.3.0.tar.gz'
  
  Content type 'unknown' length 846065 bytes (826 KB)
  
  downloaded 826 KB
  * installing *source* package ‘igraph’ ...
  ** package ‘igraph’ successfully unpacked and MD5 sums checked
  installing to /sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/igraph/libs
  ** R
  ** demo
  ** inst
  ** preparing package for lazy loading
  ** help
  *** installing help indices
  ** building package indices
  ** testing if installed package can be loaded
  
  Error in dyn.load(file, DLLpath = DLLpath, ...) :    unable to load shared object '/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/igraph/libs/igraph.so': libicui18n.so.58: cannot open shared object file: No such file or directory
  
  Error: loading failed Execution halted ERROR: loading failed
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/igraph’ Warning in install.packages :   installation of package ‘igraph’ had non-zero exit status
  
  ERROR: dependency ‘proxy’ is not available for package ‘dtw’
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/dtw’ Warning in install.packages :   installation of package ‘dtw’ had non-zero exit status
  
  ERROR: dependency ‘igraph’ is not available for package ‘diffusionMap’
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/diffusionMap’ Warning in install.packages :   installation of package ‘diffusionMap’ had non-zero exit status
  
  ERROR: dependencies ‘igraph’, ‘dtw’, ‘diffusionMap’ are not available for package ‘Seurat’
  * removing ‘/sfs/qumulo/qhome/nv4e/R/x86_64-pc-linux-gnu-library/3.3/Seurat’ Warning in install.packages :   installation of package ‘Seurat’ had non-zero exit status
  </code></pre>
  
  <p>How could it be fixed? What to try?</p>
  
  <p>Operating system is <code>CentOS Linux release 7.3.1611 (Core)</code></p>
  
  <blockquote>
    <p>Update</p>
  </blockquote>
  
  <p>I also tried development version of <code>Seurat</code> but it failed too:
  <a href="http://satijalab.org/seurat/devinstall.html" rel="nofollow noreferrer">http://satijalab.org/seurat/devinstall.html</a></p>
  
  <blockquote>
    <p>Update</p>
  </blockquote>
  
  <p>I tried installing <code>Seurat</code> using <code>conda install -c bioconda r-seurat</code> and it is not working. It is giving the error:</p>
  
  <blockquote>
    <p>-bash-4.2$ conda install -c bioconda r-seurat 
    Fetching package metadata .............
    Solving package specifications: </p>
    
    <p>PackageNotFoundError: Packages missing in current channels:</p>
  </blockquote>
  
  <ul>
  <li>r-seurat -> r-cowplot</li>
  <li>r-seurat -> r-diffusionmap</li>
  <li>r-seurat -> r-dtw</li>
  <li>r-seurat -> r-ggridges</li>
  <li>r-seurat -> r-ica</li>
  <li>r-seurat -> r-pbapply</li>
  <li>r-seurat -> r-ranger</li>
  <li>r-seurat -> r-rcppprogress</li>
  <li>r-seurat -> r-sdmtools</li>
  <li>r-seurat -> r-tclust</li>
  </ul>
  
  <blockquote>
    <p>We have searched for the packages in the following channels:</p>
  </blockquote>
  
  <ul>
  <li><a href="https://conda.anaconda.org/bioconda/linux-64" rel="nofollow noreferrer">https://conda.anaconda.org/bioconda/linux-64</a></li>
  <li><a href="https://conda.anaconda.org/bioconda/noarch" rel="nofollow noreferrer">https://conda.anaconda.org/bioconda/noarch</a></li>
  <li><a href="https://repo.continuum.io/pkgs/main/linux-64" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/main/linux-64</a></li>
  <li><a href="https://repo.continuum.io/pkgs/main/noarch" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/main/noarch</a></li>
  <li><a href="https://repo.continuum.io/pkgs/free/linux-64" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/free/linux-64</a></li>
  <li><a href="https://repo.continuum.io/pkgs/free/noarch" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/free/noarch</a></li>
  <li><a href="https://repo.continuum.io/pkgs/r/linux-64" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/r/linux-64</a></li>
  <li><a href="https://repo.continuum.io/pkgs/r/noarch" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/r/noarch</a></li>
  <li><a href="https://repo.continuum.io/pkgs/pro/linux-64" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/pro/linux-64</a></li>
  <li><a href="https://repo.continuum.io/pkgs/pro/noarch" rel="nofollow noreferrer">https://repo.continuum.io/pkgs/pro/noarch</a></li>
  </ul>
   77: <p>As @terdon mentioned in the comments, you need to <code>sudo yum install libicu</code> on the relevant nodes (or have your admin do that for you). Alternatively, seurat can be installed via conda, which means you don't need root access.</p>
  