[RFC] haskell build recipe updates by liontiger23 · Pull Request #6955 · getsolus/packages

liontiger23 · 2025-11-09T02:55:54Z

Note

This is independent of Upgrade of Haskell stack

Summary

Switched all remaining haskell packages that did not use %haskell_* macros to use them.

However, this highlighted some issues with expressiveness of current macros.
I had to use cabal directly for following tasks:

install build dependencies like alex, happy and hspec-discover,
which runhaskell Setup.hs does not build due to issue
build dependent libraries with specific flags, because runhaskell Setup.hs apparently
only supports version bounds in --constraint and not setting flags as well
(needed for pandoc build with --constraint="pandoc +embed_data_files")

Below are summaries for each package:

ghcup
- Update build recipe to use %haskell-* macros instead of raw cabal
  as discussed at ghcup: Add at v0.1.50.2 #6540 (comment)
- Disable parallel build due to weird bug in cabal/ghc
- Replace .cabal patch file with --constraint argument
- Enable running tests by explicitly providing hspec-discover
pandoc
- Update build recipe to use %haskell-* macros instead of raw cabal
  as discussed at ghcup: Add at v0.1.50.2 #6540 (comment)
- Switch to hackage source for pandoc-cli specifically instead of whole pandoc repo
pandoc-crossref
- Switch to hackage source for pandoc-crossref to avoid ugly hack with rm of cabal.project.freeze
sv2v
- Update build recipe to use %haskell-* macros instead of raw cabal
  as discussed at ghcup: Add at v0.1.50.2 #6540 (comment)
- Tests are disabled because they require following dependencies
  - Icarus Verilog - for Verilog simulation
  - shUnit2 - test framework

Checklist

Package was built and tested against unstable
This change could gainfully be listed in the weekly sync notes once merged

**Summary** - Update build recipe to use `%haskell-*` macros instead of raw cabal as discussed at getsolus#6540 (comment) - Disable parallel build due to weird bug in cabal/ghc - Replace `.cabal` patch file with `--constraint` argument - Enable running tests by explicitly providing `hspec-discover`

**Summary** - Update build recipe to use `%haskell-*` macros instead of raw cabal as discussed at getsolus#6540 (comment) - Switch to hackage source for `pandoc-cli` specifically instead of whole pandoc repo

**Summary** - Switch to hackage source for `pandoc-crossref` to avoid ugly hack with rm of `cabal.project.freeze`

**Summary** - Update build recipe to use `%haskell-*` macros instead of raw cabal as discussed at getsolus#6540 (comment) - Tests are disabled because they require following dependencies - [Icarus Verilog](https://steveicarus.github.io/iverilog/) - for Verilog simulation - [shUnit2](https://github.com/kward/shunit2) - test framework

liontiger23 · 2025-11-09T03:12:00Z

@GZGavinZhao please take a look

I tried to switch remaining packages to %haskell_* macros, but in some places I did have to inline them.

I am thinking that we could introduce several more macros:

%cabal_install_build_tool (or something along those lines) that would do something like this:
```
cabal update
cabal install $@
for exe in "$@"; do
  cp "$HOME/.cabal/bin/$exe" "/usr/bin/$exe"
done
```
We can use it install build-only executables:
- in ghcup to install hspec-discover
```
%cabal_install_build_tool hspec-discover
```
- in sv2v to install alex and happy
```
%cabal_install_build_tool alex happy
```

%cabal_build_dependencies and %haskell_configure_exe which are just outlined parts of existing
%cabal_configure macro

%cabal_build_dependencies

cabal update
cabal build %JOBS% --only-dependencies --disable-tests -O2 --ghc-options="-H128m %JOBS%" "$@"

%haskell_configure_exe

%haskell_configure --disable-executable-dynamic \
                   --package-db=$HOME/.cabal/store/ghc-$GHCV/package.db \
                   "$@"

Then to solve passing flags to pandoc library we could do

%cabal_build_dependencies --constraint="crypton-x509-store == 1.6.11" \
                          --constraint="pandoc +embed_data_files"
%haskell_configure_exe

liontiger23 · 2025-11-09T03:14:14Z

packages/g/ghcup/package.yml

-    %cabal_configure -f+tar -f+tui --enable-tests
+    %cabal_configure -f+tar -f+tui --enable-tests \
+                     --constraint='brick >=2.5 && <2.8'
+    cabal install hspec-discover


Could be %cabal_install_build_tool hspec-discover

liontiger23 · 2025-11-09T03:15:03Z

packages/g/ghcup/package.yml

-    mkdir -p $installdir/usr/bin
-    cabal install --installdir=$installdir/usr/bin --install-method=copy exe:ghcup
+    %haskell_install exe:ghcup
+    rm -rf $installdir/%libdir%


Maybe we can also bundle this rm -rf somewhere into %haskell_install_exe or something like that?

liontiger23 · 2025-11-09T03:15:40Z

packages/p/pandoc-crossref/package.yml

 setup      : |
-    rm $workdir/cabal.project.freeze
-    %cabal_configure --enable-tests
+    %cabal_configure --constraint="crypton-x509-store == 1.6.11" --enable-tests


Here %cabal_configure works because --constraint contains only version specification

liontiger23 · 2025-11-09T03:16:25Z

packages/p/pandoc/package.yml

-      --disable-executable-dynamic \
-      --ghc-options="-H512m %JOBS%" \
-      -f embed_data_files
+    cabal build %JOBS% --only-dependencies --disable-tests -O2 --ghc-options="-H128m %JOBS%" \


This could be

%cabal_build_dependencies --constraint="crypton-x509-store == 1.6.11" \ --constraint="pandoc +embed_data_files" %haskell_configure_exe

liontiger23 · 2025-11-09T03:17:01Z

packages/s/sv2v/package.yml

+    export CABAL_DIR="$HOME/.cabal"
    cabal update
-    cabal configure -O2 %JOBS% --disable-executable-dynamic
+    cabal install alex happy


Could be %cabal_install_build_tool alex happy

liontiger23 added 4 commits November 9, 2025 09:38

pandoc: Update build recipe

53c38c8

**Summary** - Update build recipe to use `%haskell-*` macros instead of raw cabal as discussed at getsolus#6540 (comment) - Switch to hackage source for `pandoc-cli` specifically instead of whole pandoc repo

pandoc-crossref: Update build recipe

7dafdc7

**Summary** - Switch to hackage source for `pandoc-crossref` to avoid ugly hack with rm of `cabal.project.freeze`

github-project-automation bot added this to Solus Nov 9, 2025

github-project-automation bot moved this to Triage in Solus Nov 9, 2025

liontiger23 marked this pull request as draft November 9, 2025 02:56

liontiger23 commented Nov 9, 2025

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[RFC] haskell build recipe updates#6955

[RFC] haskell build recipe updates#6955
liontiger23 wants to merge 4 commits intogetsolus:mainfrom
liontiger23:haskell-macros

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