mjhjmtu

I want to install R-base sid here in Debian.
It would be great if some CRAN packages installed can be maintained in the SID version.
Code

sudo apt install r-base/unstable

Output

Reading package lists... Done
Building dependency tree 
Reading state information... Done
E: Release 'unstable' for 'r-base' was not found

I also tried unsuccessfully sudo apt-get install r-base/unstable. I cannot find R 3.4.x in apt search R-base| grep 3.4.
I think it can be enough to add the source of the R-base sid in /etc/apt/sources.list.
However, I could not find the exact address in the package homepage.

OS: Debian 8.7

R: current 3.3.3

Follow the official instructions on CRAN and make the appropriate changes to /etc/apt/sources.list.

Then, to install the backported R 3.4 packages, you can do

sudo apt-get -t jessie-backports install r-base

After some trial and error with the official instructions, the following worked for me:

Use a text editor to add the following to etc/apt/sources.list:

deb [trusted=yes] http://ftp.us.debian.org/debian sid main
deb-src [trusted=yes] http://ftp.us.debian.org/debian sid main

(careful, here we're add support for more than just R).

You can also do everything from the command line with e.g.

d0=$(echo "[trusted=yes] http://ftp.us.debian.org/debian sid main"); echo $d0
d1=$(echo "deb" $d0); echo $d1
d2=$(echo "deb-src" $d0); echo $d2
## give all users access to /ect/apt (or can use sudo cat ... below)
sudo chmod --recursive a+rwX /etc/apt/
cat <<EOF >> /etc/apt/sources.list
$d1
$d2
EOF
## check this worked 
cat /etc/apt/sources.list

then

### ensure have keyring
sudo apt-get install -y debian-archive-keyring
## add key for R (I think this is still necessary)
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
### ensure no errors with apt-get update
sudo apt-get install -y libappstream4
sudo apt-get update
sudo apt-get install -y r-base r-base-dev libopenblas-base
sudo apt-get autoremove