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Migrate from Spago 0.21.0 to Spago 1.0.3#322

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FranklinChen:migrate-spago-v1
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Migrate from Spago 0.21.0 to Spago 1.0.3#322
FranklinChen wants to merge 1 commit intoexercism:mainfrom
FranklinChen:migrate-spago-v1

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Summary

  • Migrate all 32 exercises and template from Spago 0.21.0 (Dhall config) to Spago 1.0.3 (YAML + Registry package set 73.0.0)
  • Rewrite CI scripts for Spago 1.0 compatibility
  • Update CI workflow to use spago 1.0.3

Details

Configuration migration

  • Deleted: spago.dhall, packages.dhall, .solution.dhall from template and all 32 exercises
  • Created: spago.yaml for each, using registry: 73.0.0 package set
  • Updated: .meta/config.json invalidators from ["packages.dhall", "spago.dhall"] to ["spago.yaml"]
  • Updated: top-level config.json invalidator

CI workflow

  • Spago version: 0.21.0 -> 1.0.3
  • Removed psa (no longer needed with Spago 1.0)
  • setup-purescript action handles spago 1.0.3 natively

Script rewrites

scripts/ci: Pre-compiles shared dependencies once, then for each exercise:

  • Symlinks .spago/ and node_modules/, copies output/ (preserving timestamps)
  • Copies example solution into src/ (replaces .solution.dhall approach, since Spago 1.0 doesn't support custom source paths)
  • Runs npx spago test --offline

scripts/ci-check: Validates all exercises use identical spago.yaml (stripping the name: field before comparison)

bin/update-exercises.sh: Propagates template spago.yaml to all exercises with appropriate package name

Companion PR

Companion test runner PR: exercism/purescript-test-runner#63

Both PRs should be merged together — the track depends on spago 1.0.3 which the test runner also needs.

Test plan

  • All 32 exercises pass CI (scripts/ci shows 32 ✓ Test succeeded)
  • scripts/ci-check validates consistent spago.yaml across exercises
  • No Dhall files remain in any exercise directory
  • All .meta/config.json invalidators updated

🤖 Generated with Claude Code

Replace Dhall configuration (spago.dhall, packages.dhall, .solution.dhall)
with spago.yaml using registry-based package set 73.0.0 across all 32
exercises and the template.

Key changes:
- All exercises: spago.yaml replaces dhall files, invalidators updated
- CI workflow: spago 1.0.3, removed psa
- scripts/ci: pre-compile shared deps, copy example solutions to src/
  (replaces .solution.dhall approach since Spago 1.0 has no custom sources)
- scripts/ci-check: compare spago.yaml (stripping name field)
- bin/update-exercises.sh: propagate template spago.yaml to exercises

Companion PR needed in exercism/purescript-test-runner.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Copilot AI review requested due to automatic review settings February 9, 2026 04:57
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github-actions bot commented Feb 9, 2026

Hello. Thanks for opening a PR on Exercism 🙂

We ask that all changes to Exercism are discussed on our Community Forum before being opened on GitHub. To enforce this, we automatically close all PRs that are submitted. That doesn't mean your PR is rejected but that we want the initial discussion about it to happen on our forum where a wide range of key contributors across the Exercism ecosystem can weigh in.

You can use this link to copy this into a new topic on the forum. If we decide the PR is appropriate, we'll reopen it and continue with it, so please don't delete your local branch.

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Note: If this PR has been pre-approved, please link back to this PR on the forum thread and a maintainer or staff member will reopen it.

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github-actions bot commented Feb 9, 2026

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

If this PR does not affect the result of the test (or, for example, adds an edge case that is not worth rerunning all tests for), please add the following to the merge-commit message which will stops student's tests from re-running. Please copy-paste to avoid typos.

[no important files changed]

For more information, refer to the documentation. If you are unsure whether to add the message or not, please ping @exercism/maintainers-admin in a comment. Thank you!

@github-actions github-actions bot closed this Feb 9, 2026
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github-actions bot commented Feb 9, 2026

Hello 👋 Thanks for your PR.

This repo does not currently have dedicated maintainers. Our cross-track maintainers team will attempt to review and merge your PR, but it will likely take longer for your PR to be reviewed.

If you enjoy contributing to Exercism and have a track-record of doing so successfully, you might like to become an Exercism maintainer for this track.

Please feel free to ask any questions, or chat to us about anything to do with this PR or the reviewing process on the Exercism forum.

(cc @exercism/cross-track-maintainers)

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github-actions bot commented Feb 9, 2026

This is an unmaintained repository.

Cross-track maintainers - feel free to merge.

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Pull request overview

This PR migrates the track’s PureScript build tooling from Spago 0.21 (Dhall) to Spago 1.0.3 (YAML + Registry package sets), updating exercise configurations and CI scripts to keep CI efficient across many independent Spago projects.

Changes:

  • Replace spago.dhall/packages.dhall/.solution.dhall with spago.yaml (Registry package set 73.0.0) across template + exercises.
  • Rewrite scripts/ci and scripts/ci-check for Spago 1.x and update the CI workflow to use Spago 1.0.3.
  • Update exercise invalidators and .gitignore entries for Spago 1.x artifacts (spago.lock, .spago/, .purs-repl).

Reviewed changes

Copilot reviewed 233 out of 235 changed files in this pull request and generated 34 comments.

Show a summary per file
File Description
template/spago.yaml Adds Spago 1.x YAML config using Registry package set 73.0.0
template/spago.dhall Removes Spago Dhall config
template/packages.dhall Removes package-set Dhall config
template/package.json Updates Spago devDependency to ^1.0.3
template/.gitignore Updates ignored build/cache artifacts for Spago 1.x
scripts/ci Reworks CI build/test flow for Spago 1.x with shared deps strategy
scripts/ci-check Validates all exercises share the same spago.yaml (excluding name)
bin/update-exercises.sh Propagates template spago.yaml + .gitignore to exercises
.github/workflows/ci.yml Updates setup step to install Spago 1.0.3 (drops psa)
config.json Updates invalidator to spago.yaml
exercises/**/spago.yaml Adds per-exercise Spago 1.x configs
exercises/**/spago.dhall Removes per-exercise Spago Dhall configs
exercises/**/packages.dhall Removes per-exercise package-set Dhall configs
exercises/**/.solution.dhall Removes per-exercise solution-only Dhall configs
exercises/**/.meta/config.json Updates invalidators to spago.yaml
exercises/**/.gitignore Updates ignored artifacts for Spago 1.x
exercises/**/src/*.purs Updates student-facing source files (note: currently replaced with full implementations; see PR comments)

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Comment on lines 10 to +12
anagramsFor :: String -> Array String -> Array String
anagramsFor word candidates = unsafeThrow "You need to implement this function."
anagramsFor word candidates = filter (isAnagram word) candidates

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This introduces a complete anagramsFor implementation in the student-facing src/ file. That will make the exercise pass immediately and exposes the solution. Please restore this file to a stub and keep the working code in examples/src.

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Comment on lines 32 to +36
meetup :: Year -> Month -> Week -> Weekday -> Maybe Date
meetup = unsafeThrow "You need to implement this function."
meetup y m w wd = enumFromTo bottom top
# map (exactDate y m)
# catMaybes
# filter (\d -> weekday d == wd)
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This change adds a complete meetup implementation to the student-facing src/ file. That will ship a passing solution to learners and duplicates the reference implementation. Please restore this file to a stub and keep the working code in examples/src.

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Comment on lines 10 to +12
toRNA :: String -> Maybe String
toRNA = unsafeThrow "You need to implement this function."
toRNA dna = fromCharArray <$> traverse complement (toCharArray dna)

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This replaces the student stub with a complete implementation in src/. That will make the exercise pass immediately and exposes the solution. Please revert src/RnaTranscription.purs to a stub and keep the working solution in examples/src.

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Comment on lines 25 to +29
largestProduct :: String -> Int -> Maybe Int
largestProduct = unsafeThrow "You need to implement this function."
largestProduct digits span
| span == 0 = Just 1
| span < 0 = Nothing
| otherwise = do
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This adds a full largestProduct implementation to the student solution file under src/. That will cause the exercise to pass immediately and exposes the solution. Please revert to a stub and keep the reference implementation in examples/src.

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Comment on lines 29 to +30
phoneNumber :: String -> Maybe String
phoneNumber = unsafeThrow "You need to implement this function."
phoneNumber input = clean input >>= check
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This implements the full phone number cleaning logic directly in src/, which is the student submission file. That will ship a working solution to learners. Please revert to a stub and keep the reference implementation in examples/src.

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Comment on lines 11 to +15
hey :: String -> String
hey = unsafeThrow "You need to implement this function."
hey msg =
if isYell msg && isQuestion msg then
"Calm down, I know what I'm doing!"
else if isQuestion msg then
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This replaces the student stub with a complete hey implementation in src/. That will ship a passing solution to learners and duplicates the reference implementation. Please revert this file to a stub and keep the working code in examples/src.

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Comment on lines 31 to +32
wordCount :: String -> Map String Int
wordCount = unsafeThrow "You need to implement this function."
wordCount = prepare >>> freq
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This appears to be the student-facing solution file (listed under files.solution), but it now contains a full working implementation identical in structure to the example solution. Student stubs should not ship with a passing implementation; keep the reference solution in examples/src and restore this file to a minimal starter that fails tests until implemented.

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Comment on lines 7 to +9
raindrops :: Int -> String
raindrops = unsafeThrow "You need to implement this function."
raindrops n =
let
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This introduces a full working implementation in the student-facing src/ file. That will make the exercise pass on download and exposes the solution. Please revert to a stub and keep the implementation in examples/src.

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Comment on lines 13 to +17
isIsogram :: String -> Boolean
isIsogram = unsafeThrow "You need to implement this function."
isIsogram = toLower
>>> toCharArray
>>> filter letter
>>> foldl toMap empty
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This adds a full isIsogram implementation to the learner’s src/ file. That will make the exercise pass out-of-the-box and exposes the solution. Please revert this file to a stub and keep the reference solution in examples/src.

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Comment on lines 12 to +16
squareOfSum :: Int -> Int
squareOfSum = unsafeThrow "You need to implement `squareOfSum`."
squareOfSum n = sum (range 1 n) `pow` 2

sumOfSquares :: Int -> Int
sumOfSquares = unsafeThrow "You need to implement `sumOfSquares`."
sumOfSquares n = map (_ `pow` 2) (range 1 n) # sum
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This change fills in the full implementations for the student-facing functions in src/. That will ship a passing solution to learners and duplicates the reference implementation. Please revert src/DifferenceOfSquares.purs to a stub and keep the working code in examples/src.

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