Cardano Updates

Signed-off-by: Eric Torreborre <[email protected]>

Signed-off-by: Eric Torreborre <[email protected]>

`cabal.project` `profiling:` / `library-profiling:` / `coverage:` /
`debug-info:` become `--enable-{profiling,library-profiling,coverage,debug-info}`
in plan.json's per-unit `configure-args` (cabal-install records the
boolean form regardless of level).  Translate those entries back
into haskell.nix module options so a project's cabal.project
stanza flows through to the builder without per-component module
overrides.

Three pieces:

1. `modules/component-options.nix`: surface `enableDWARF` as a
   per-component option (matches `enableProfiling`).
2. `builder/comp-builder.nix`: read the default from
   `component.enableDWARF` instead of hard-coding `false`.  The
   existing branches that swap in the `.dwarf` GHC variant and
   pass `-g3` to ghc then trigger automatically.
3. `modules/install-plan/configure-args.nix`: map
   `--enable-{profiling,library-profiling,coverage,debug-info}` from
   plan.json into `enableProfiling` / `enableLibraryProfiling` /
   `doCoverage` / `enableDWARF` respectively.

Confirmed `tests.cabal-simple-debug.run` on native ghc9141 builds
with `cabal.project` `debug-info: 2` and no module-level toggle.

* comp-builder: fix coverage installPhase hpc-dir lookup on Windows

The doCoverage installPhase tried
`${testExecutable}-tmp/extra-compilation-artifacts` which expands
to `dist/build/<cname>/<cname><exeExt>-tmp/...`.  On Windows hosts
`exeExt = ".exe"`, so the path becomes
`dist/build/<cname>/<cname>.exe-tmp/...` — a path cabal never
creates.  The fallback `cp -r dist/hpc $out/share` then errors with
"No such file or directory" and the slice fails.

cabal's per-component tmp dir is `dist/build/<cname>/<cname>-tmp`
regardless of platform, so use that path directly (and drop the
broken `${testExecutable}-tmp` case — it was only ever right when
`exeExt == ""`, which the new path also covers).

Confirmed `tests.coverage.run` on ucrt64 builds; native still passes.

* ghc-for-component-wrapper: add ghc-iserv-dyn alias on native-musl ≥ 9.10

Native-musl GHC ≥ 9.10 ships `<targetPrefix>ghc-iserv-dyn` and the
wrapper already creates unprefixed aliases for `ghc-iserv` and
`ghc-iserv-prof`, but it was missing `ghc-iserv-dyn`.  Without the
alias, projects compiling profiled + dyn-linked components on
native-musl fail at TH-eval time when ghc looks for
`<topdir>/bin/ghc-iserv-dyn`.

Add the symmetric `ghc-iserv-dyn` alias alongside the existing
ones.

* linux-cross: add -optc-fPIC alongside -fPIC on aarch64

aarch64 cross builds pass `-fPIC` to ghc but the same flag isn't
forwarded to the C compiler.  Some packages compile C sources that
end up needing position-independent code (e.g. when later linked
into shared libraries / TH plugins), and the missing `-fPIC` on
those triggers `relocation R_AARCH64_ADR_PREL_PG_HI21 ... can not
be used when making a shared object` link failures.

Pass `-optc-fPIC` alongside `-fPIC` so ghc forwards it to the C
compiler.

* darwin: gate double-conversion c++abi patch to GHC < 9.4

The `extra-libraries: c++ c++abi` substitution in
`double-conversion.cabal` exists to fix linkage on darwin where
the cabal file's `c++` entry alone is insufficient.  From GHC 9.4
onwards the `system-cxx-std-lib` pseudo-package handles c++abi
linkage automatically, so the patch becomes a no-op there at best
and double-application at worst.

Gate the override on `compiler.version < 9.4` so newer GHCs are
left alone.