Removing Haskell Platform

[Kenneth_Ogden]

I installed the Haskell platform then had some problems. The main issue was that I would get the following error message whenever I would start terminal:

Error: 0: couldn’t open source file <ghc-7.10.3>
ghc-7.10.3: No such file or directory
bash: warning: here-document at line 119 delimited by end-of-file (wanted `EOF’)

I have removed it from my laptop, but I’m still getting the error message in terminal. What should I do?

[wolfman]

Hi,

did you use this PPA?:

https://www.haskell.org/downloads/linux

Have you checked in your /home folder for hidden files (press Ctrl + h to show hidden files) and then remove (delete) the .haskell folder?.

[Kenneth_Ogden]

I honestly don’t remember using PPA. I checked as you suggested and the .haskell folder was not in my home folder.

[wolfman]

Hi Kenneth,

well all I can really suggest is you try that PPA I mentioned and see if it helps as I don’t have the app installed myself!.

[Kenneth_Ogden]

How do I get terminal to download and install that PPA?

[wolfman]

Hi Kenneth,

open a terminal with Ctrl + Alt + t and paste the following lines one after the other pressing “Enter” after each paste:

UbuntuSteps to setup ghc and cabal:

sudo apt-get update

sudo apt-get install -y software-properties-common

sudo add-apt-repository -y ppa:hvr/ghc

sudo apt-get update

sudo apt-get install -y cabal-install-1.22 ghc-7.10.3

cat >> ~/.bashrc <<EOF

export PATH="\$HOME/.cabal/bin:/opt/cabal/1.22/bin:/opt/ghc/7.10.3/bin:\$PATH"

EOF

export PATH=~/.cabal/bin:/opt/cabal/1.22/bin:/opt/ghc/7.10.3/bin:$PATH

Then go here and add the version you require pasting the apporiate command for your Ubuntu version in the terminal:

commercialhaskell/stack/blob/master/doc/install_and_upgrade.md#ubuntu

As far as I can tell the commands above are all correct?, I took them from here:

https://www.haskell.org/downloads/linux

[Kenneth_Ogden]

I tried the PPA and I’m still getting that error message when I start the terminal. Thanks for your help anyway.

[Kenneth_Ogden]

Okay! Now I’m getting this error message:

Error: 0: couldn’t open source file <ghc-7.10.3>
ghc-7.10.3: No such file or directory
bash: warning: here-document at line 119 delimited by end-of-file (wanted `EOF’)
bash: fork: Cannot allocate memory

I’ve tried to remove it and it’s dependencies, I even tried to purge it and it’s dependencies, but all I get is the following message:

bash: fork: Cannot allocate memory

Now what do I do?

[wolfman]

Having looked at the commands from the website again, I think this line might be correct now (I did tell you to enter them all as single commands so my fault there, sorry!):

export PATH="\$HOME/.cabal/bin:/opt/cabal/1.22/bin:/opt/ghc/7.10.3/bin:\$PATH" EOF

So try running the other commands like so:

sudo apt-get update

sudo apt-get install -y software-properties-common

sudo add-apt-repository -y ppa:hvr/ghc

sudo apt-get update

sudo apt-get install -y cabal-install-1.22 ghc-7.10.3

cat >> ~/.bashrc <<EOF

export PATH="\$HOME/.cabal/bin:/opt/cabal/1.22/bin:/opt/ghc/7.10.3/bin:\$PATH" EOF

export PATH=~/.cabal/bin:/opt/cabal/1.22/bin:/opt/ghc/7.10.3/bin:$PATH

[Kenneth_Ogden]

Every time I tried to enter a sudo command, terminal would always give the exact same response:

bash: fork: Cannot allocate memory

The rest seemed to have no effect. I appreciate the help though.

At this point, I’m seriously considering doing a complete reinstall when Ubuntu 16.04 LTS comes out. Maybe even trying a different distro. What do you think?

[wolfman]

Try UM 16.04 Beta 2, it is up and running fine on my rig after a complete fresh install!.

[Kenneth_Ogden]

How would I get it to format the hard drive and do a full installation instead of just upgrading. I’m afraid that if it simply upgrades, I might be stuck with the same issue.

[wolfman]

Hi Kenneth,

use the "Something Else" method and format both your "root" and "home" partitions instead of only root, it can be that simple:

Install Ubuntu-MATE using the "Something else" method

Hi all, this guide can be used on any Ubuntu based system and is intended for people who have a basic working knowledge of an Ubuntu installation and wish to keep the contents of their home folder after doing a re-install. This guide is also intended for those that already have an existing swap, root and home partition setup!!. If you have not done/never done any pre-partitioning, please see this guide about using Gparted partition editor: See also: https://help.ubuntu.com/community/Howto…

If you want to know more about partitioning; go here:

GParted partition guide for Linux and Windows users

PLEASE NOTE: THIS GUIDE DOES NOT DEPICT THE INSTALLATION (CREATION) OF A UEFI PARTITION. IF YOU HAVE A COMPUTER WITH UEFI/BIOS, MAKE SURE YOU ALSO CREATE A UEFI/BIOS PARTITION AS WELL. SEE FURTHER REMARKS ABOUT UEFI PARTITIONS IN THE GUIDE!. Linux beginners should also look here: You can only partition on an unmounted drive using an installation disk of your Linux flavour with a partitioning tool included, use the Gparted tool in live mode, or you can download a copy of Gparted from the link…

Stacks of info here too if you feel the need to start from the beginning!:

Ubuntu beginners guide, complete how to install and run first update

WARNING 1: BACKUP ALL YOUR DATA BEFORE YOU START TO INSTALL IN CASE THINGS GO WRONG!. SAVE ALL YOUR IMPORTANT FILES AND FOLDERS TO EITHER AN EXTERNAL USB DRIVE AND/OR TO A 2ND HARD DRIVE ON YOUR PC. DO NOT SAVE ANYTHING ON THE SAME DRIVE YOU INTEND TO USE FOR LINUX UNLESS YOU UNDERSTAND/KNOW WHAT YOU ARE DOING!. ONCE YOU START PARTITIONING AND YOU COMMIT TO FORMATTING YOUR PARTITIONS, THERE IS NO GOING BACK!. WARNING 2: IF YOU HAVE A RECOVERY PARTITION AND HAVE NOT CREATED ANY RECOVERY DISKS FO…

[Kenneth_Ogden]

Thanks for your help. I really appreciate it.

[wolfman]

My pleasure Kenneth, it’s on forums like this one that I learned how to do things and I’m just trying to pass on what I think works well for me!.

[Kenneth_Ogden]

And I’m very grateful for your help. I’m glad that there’s someone out there that’s willing share expertise with a newbie. In many cases, I’ve either been given the brush off or just felt ignored.

[wolfman]

Hi Kenneth,

often the written word can cause more damage than the spoken!. Don’t give up and once you have re-installed at least 100 times; you’ll be able to do it blindfold!.