GitLab

Partial fix of #274

This installs the in-tree Cabal into the cabal-sandbox before building
hadrian itself. This only works if the installed cabal version is < 1.24,
because I have not yet figured out how it can be done with the newly
introduced `new-build` command.

Split CompilerMode for GHC and CC

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>

Fix inability to find gmp.h when building concurrently

There were situations when building concurrently when we would
request `gmp.h` before it had been built (or copied).

This was occuring when we generated the list of dependents for
the c files in the `integer-gmp` folder. Thus, when generating the
dependents for this library we now require `gmp.h`.

Change the stack configuration to use the local Cabal lib

Hadrian should be built with a local Cabal from within the
GHC codebase. This makes the stack pick it up, instead of
using the released version of Cabal.
Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>

See #259.

Typo [skip ci]

[skip ci]

See #268. [skip ci]

See #269.

See #269.

See #269.

See #268.

Add actions copyDirectoryContent and runBuilderWith

See #259, #268.

See #259

See #259

See #259, #268.

See #259, #268.

See #259, #268.