osotolongo@detritus:~$ mkdir /nas/osotolongo/customR
osotolongo@detritus:~$ cd /nas/osotolongo/customR
osotolongo@detritus:customR$ mkdir src
osotolongo@detritus:src$ wget https://cran.rstudio.com/src/base/R-4/R-4.0.2.tar.gz
--2020-07-24 09:56:53--  https://cran.rstudio.com/src/base/R-4/R-4.0.2.tar.gz
Resolving cran.rstudio.com... 13.33.235.74, 13.33.235.77, 13.33.235.30, ...
Connecting to cran.rstudio.com|13.33.235.74|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 33191186 (32M) [application/x-gzip]
Saving to: “R-4.0.2.tar.gz”
 
100%[=============================================================================>] 33,191,186  23.3M/s   in 1.4s    
 
2020-07-24 09:57:04 (23.3 MB/s) - “R-4.0.2.tar.gz” saved [33191186/33191186]
osotolongo@detritus:src$ tar xzvf R-4.0.2.tar.gz 
...
...
...

En detritus no vas a poder instalarlo asi que te vas a un brick. Ojo que lo importante aqui son las opciones del configure

[osotolongo@brick03 R-4.0.2]$ ./configure --prefix=/nas/osotolongo/customR --with-x=no
...
...
...
[osotolongo@brick03 R-4.0.2]$ make 
...
...
...