cabal-install binaries do not work when built with -lukko

[vmchale]

Describe the bug

cabal-install fails when built with -flukko

To Reproduce

First, build cabal-install with --constraint='cabal-install -lukko' --constraint='hackage-security -lukko'

Then:

cabal update
Downloading the latest package list from hackage.haskell.org
flock: invalid argument (Bad file descriptor)

All other subcommands fail too, viz.

cabal install sak -w ghc-8.8.3
Resolving dependencies...
Build profile: -w ghc-8.8.3 -O1
In order, the following will be built (use -v for more details):
 - sak-0.1.2.0 (exe:sak) (requires download & build)
Downloading  sak-0.1.2.0
cabal: Failed to download exe:sak from sak-0.1.2.0. The exception was:
flock: invalid argument (Bad file descriptor)

Expected behavior

Should do the same thing as cabal update which does use lukko.

System information

• Linux
• cabal-install 3.2, x86_64 and aarch64

Additional context

Since lukko fails to cross-compile (see haskellari/lukko#18), this means that cross-compiled cabal binaries do not work as of 3.2

[phadej]

Will be fixed once haskell/hackage-security#242 is merged and released.