Simplified haskell devcontainer.

[PiotrJustyna]

Proposing a new version of this dockerfile as the current one:

• does not work on the new apple silicon machines
• or on corporate machines where ssl certifications stop the ghcup installation.

The dockerfile is a bit simplified following the official ghcup installation instructions + the installation script is supplemented with GHCUP_CURL_OPTS variable which handles problematic ssl certificates (better solutions to this welcome!).Thank you @hasufell for suggesting to use the bootstrap variables (e.g. ghc version).

Linked issues I recently started:

• curl + ssl problems  haskell/ghcup-hs#696
• Haskell - ghcup not installing correctly #1692

I can confirm this works on an M1 MacBook pro and am hoping the community devcontainers for Haskell start supporting that platform soon.

vscode ➜ /workspaces/haskell-community $ ghc --version
The Glorious Glasgow Haskell Compilation System, version 9.2.5
vscode ➜ /workspaces/haskell-community $ ghci
GHCi, version 9.2.5: https://www.haskell.org/ghc/  :? for help
ghci> let a=2+2
ghci> a
4
ghci> 

[hasufell]

You can set BOOTSTRAP_HASKELL_GHC_VERSION to install a specific GHC version.

You probably also want BOOTSTRAP_HASKELL_NONINTERACTIVE=1.

For a full list of env vars affecting the bootstrap, see https://github.com/haskell/ghcup-hs/blob/master/scripts/bootstrap/bootstrap-haskell#L7

[PiotrJustyna]

Oh, fantastic, thank you. Exactly what I wanted. Updating my PR now.

[PiotrJustyna]

Added some bootstrap variables:

• non interactive installation
• ghc version dictated by the devcontainer template
• cabal version defined explicitly

Unfortunately, no option to define cabal and hls versions explicitly, but in the previous version of the dockerfile those were defaulted to recommended anyway.

[eitsupi]

Cross ref devcontainers/features#470

[Juancanico5]

Proponiendo una nueva versión de este dockerfile como la actual:

• no funciona en las nuevas máquinas de silicona de Apple
• o en máquinas corporativas donde las certificaciones ssl detienen la instalación de ghcup.

El dockerfile se simplifica un poco siguiendo las instrucciones oficiales de instalación de ghcup + el script de instalación se complementa con GHCUP_CURL_OPTSuna variable que maneja los certificados SSL problemáticos (¡mejores soluciones para esta bienvenida!). Gracias.@hasufellpor sugerir usar las variables de arranque (por ejemplo, versión ghc).

Problemas vinculados que comencé recientemente:

• problemas de curl + ssl  haskell/ghcup-hs#696
• Haskell - ghcup no se instala correctamente  #1692

Puedo confirmar que esto funciona en una MacBook pro M1 y espero que los contenedores de desarrollo de la comunidad para Haskell comiencen a admitir esa plataforma pronto.

vscode ➜ /workspaces/haskell-community $ ghc --version
The Glorious Glasgow Haskell Compilation System, version 9.2.5
vscode ➜ /workspaces/haskell-community $ ghci
GHCi, version 9.2.5: https://www.haskell.org/ghc/  :? for help
ghci> let a=2+2
ghci> a
4
ghci>