I started an OpenGL project within an LTS sandbox as guided on another post and, somewhat foolishly it would see, I did a "cabal install cabal-install" when prompted that a new version was available.

The very next time I tried to work on my code.... I got this:

bash-3.2$ pwd

/Users/seancharles/Documents/Coding/haskell/lts1

bash-3.2$ cabal build

cabal: You need to re-run the 'configure' command. The version of Cabal being

used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).

bash-3.2$ cabal configure

Resolving dependencies...

Configuring lts1-0.1.0.0...

cabal: At least the following dependencies are missing:

base ==4.7.*

bash-3.2$ cabal build

cabal: You need to re-run the 'configure' command. The version of Cabal being

used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).

bash-3.2$ ls -l

total 112

-rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE

-rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs

-rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~

-rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs

-rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config

-rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51 cabal.sandbox.config

drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist

-rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal

bash-3.2$

So, welcome to a different kind of hell, "cabal version hell" perhaps?

Can anybody help me get it running again?

Thanks.

Sean.