mirror of
https://github.com/polysemy-research/polysemy.git
synced 2024-12-02 11:54:06 +03:00
Stop using stack in Travis (#121)
The travis cache appears to be broken (probably due to the nightly stack?), but it just means CI takes like half an hour now. Since I already build on stack, I'm pretty sure it's fine --- also this will give a sanity check against accidentally breaking cabal build plans. This improves CI times from ~30 minutes down to ~2.
This commit is contained in:
Sandy Maguire
GitHub
parent
78d0c4905a
commit
c3d3cc24f8
58
.travis.yml
58
.travis.yml
@ -1,44 +1,36 @@
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# Adapted from https://github.com/commercialhaskell/stack
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language: c
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sudo: false
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language: haskell
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dist: trusty
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cache:
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directories:
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- $HOME/.ghc
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- $HOME/.cabal
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- $HOME/.stack
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- .stack-work
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- $HOME/.cabal/store
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cabal: "2.4"
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matrix:
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include:
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# ghc 8.6.3
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- env: STACK='stack --resolver=lts-13.0' CACHE_NAME=8.6.3
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addons: {apt: {packages: [libgmp-dev]}}
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# nightly
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- env: STACK='stack --resolver=nightly' CACHE_NAME=nightly
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addons: {apt: {packages: [libgmp-dev]}}
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# Use the resolver in stack.yaml
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- env: STACK=stack CACHE_NAME=stack-linux
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addons: {apt: {packages: [libgmp-dev]}}
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- env: STACK=stack CACHE_NAME=stack-osx
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os: osx
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addons: {apt: {packages: [libgmp-dev]}}
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- ghc: "8.6.3"
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# - ghc: "8.4.4"
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# - ghc: "8.2.2"
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# - ghc: "8.0.2"
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# - ghc: "7.10.3"
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# - ghc: "7.8.4"
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# - ghc: "7.6.3"
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install:
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- unset CC
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- export PATH=$HOME/.local/bin:/opt/ghc/$GHCVER/bin:$PATH
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- ./.travis/install-stack.sh
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- cabal --version
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- ghc --version
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script:
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- echo "$($STACK ghc -- --version) [$($STACK ghc -- --print-project-git-commit-id 2> /dev/null || echo '?')]"
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- GHC_OPTIONS="-Werror"
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- |
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set -ex
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$STACK --no-terminal build --ghc-options="$GHC_OPTIONS"
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$STACK test --ghc-options="$GHC_OPTIONS"
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set +ex
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- cabal v2-update
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- cabal v2-build
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- cabal v2-test --enable-test
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- cabal new-haddock
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- cabal check
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- cabal sdist # tests that a source-distribution can be generated
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# Check that the resulting source distribution can be built & installed.
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# If there are no other `.tar.gz` files in `dist`, this can be even simpler:
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# `cabal install --force-reinstalls dist/*-*.tar.gz`
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- SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz &&
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(cd dist && cabal install --force-reinstalls "$SRC_TGZ")
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@ -1,29 +0,0 @@
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#!/bin/sh
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# Adapted from https://github.com/commercialhaskell/stack
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set -eux
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travis_retry() {
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cmd=$*
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$cmd || (sleep 2 && $cmd) || (sleep 10 && $cmd)
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}
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fetch_stack_osx() {
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curl -skL https://www.stackage.org/stack/osx-x86_64 | tar xz --strip-components=1 --include '*/stack' -C ~/.local/bin;
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}
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fetch_stack_linux() {
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curl -sL https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack';
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}
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# We need stack to generate cabal files with precise bounds, even for cabal
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# builds.
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mkdir -p ~/.local/bin;
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if [ "$(uname)" = "Darwin" ]; then
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travis_retry fetch_stack_osx
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else
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travis_retry fetch_stack_linux
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fi
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travis_retry $STACK --no-terminal setup;
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@ -4,7 +4,7 @@ cabal-version: 1.12
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--
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-- see: https://github.com/sol/hpack
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--
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-- hash: 3f16c72f17a2b211f296fedc1a93db88198f2f05fc66b94d1e277319c3a76613
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-- hash: 8215f1fa69bdaae106988aaf84f4a2dd2338231d1fc11ddf7dd30a9d8b61449b
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name: polysemy
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version: 0.4.0.0
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@ -98,6 +98,7 @@ test-suite polysemy-test
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InspectorSpec
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OutputSpec
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ThEffectSpec
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TypeErrors
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Paths_polysemy
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hs-source-dirs:
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test
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@ -1,173 +1,8 @@
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{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
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module DoctestSpec where
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import Test.DocTest
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import Test.Hspec
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-- $setup
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-- >>> default ()
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-- >>> :m +Polysemy
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-- >>> :m +Polysemy.Output
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-- >>> :m +Polysemy.Reader
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-- >>> :m +Polysemy.Resource
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-- >>> :m +Polysemy.State
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-- >>> :m +Polysemy.Trace
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- foo :: Sem r ()
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-- foo = put ()
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'State'
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-- ...
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-- ... (Member (State ()) r) ...
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-- ...
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ambiguousMonoState = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- foo :: Sem r ()
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-- foo = put 5
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'State'
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-- ...
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-- ... (Member (State s0) r) ...
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-- ...
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-- ... 's0' directly...
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-- ...
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ambiguousPolyState = ()
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--------------------------------------------------------------------------------
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-- |
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-- TODO(sandy): should this mention 'Reader i' or just 'Reader'?
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--
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-- >>> :{
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-- interpret @Reader $ \case
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-- Ask -> undefined
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-- :}
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-- ...
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-- ... 'Reader i' is higher-order, but 'interpret' can help only
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-- ... with first-order effects.
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-- ...
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-- ... 'interpretH' instead.
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-- ...
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interpretBadFirstOrder = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- runFoldMapOutput
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-- :: forall o m r a
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-- . Monoid m
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-- => (o -> m)
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-- -> Sem (Output o ': r) a
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-- -> Sem r (m, a)
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-- runFoldMapOutput f = runState mempty . reinterpret $ \case
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-- Output o -> modify (<> f o)
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-- :}
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-- ...
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-- ... Probable cause: ...reinterpret... is applied to too few arguments
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-- ...
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tooFewArgumentsReinterpret = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- let reinterpretScrub :: Sem (Output Int ': m) a -> Sem (State Bool ': Trace ': m) a
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-- reinterpretScrub = undefined
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-- foo :: Sem '[Output Int] ()
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-- foo = pure ()
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-- foo' = reinterpretScrub foo
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-- foo'' = runState True foo'
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-- foo''' = runTraceIO foo''
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-- in runM foo'''
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'Lift'
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-- ...
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-- ... add (Member (Lift IO) '[]) ...
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-- ...
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--
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-- PROBLEM: We're trying to run more effects than exist in the eff row. This is
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-- indeed a problem, but the error message isn't helpful.
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--
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-- SOLUTION: Add a special case to `AmbiguousSend` when `r ~ '[]`.
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runningTooManyEffects'WRONG = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- foo :: Sem (State Int ': r) ()
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-- foo = put ()
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'State'
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-- ...
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-- ... (Member (State ()) State Int : r) ...
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-- ...
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--
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-- PROBLEM: There should be parentheses around `State Int : r`
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--
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-- SOLUTION: Emit parens only when the effect row is of the form `e1 ': ...`
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missingParens'WRONG = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- let foo :: Member Resource r => Sem r ()
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-- foo = undefined
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-- in runM $ runResourceInIO foo
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'Lift'
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-- ...
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-- ... (Member (Lift IO) r0) ...
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-- ...
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-- ... Could not deduce: (Member Resource r1)
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-- ...
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--
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-- PROBLEM: This error is totally bogus. We forgot to give an argument to
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-- 'runResourceInIO'. For comparison, the standard error GHC gives in this case
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-- is significantly more helpful:
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--
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-- <interactive>:192:13: error:
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-- • Couldn't match expected type ‘Sem '[Lift m] a’
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-- with actual type ‘Sem (Resource : r0) a0 -> Sem r0 a0’
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-- • Probable cause: ‘runResourceInIO’ is applied to too few arguments
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-- In the second argument of ‘($)’, namely ‘runResourceInIO foo’
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-- In the expression: runM $ runResourceInIO foo
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-- In the expression:
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-- let
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-- foo :: Member Resource r => Sem r ()
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-- foo = undefined
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-- in runM $ runResourceInIO foo
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-- • Relevant bindings include
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-- it :: m a (bound at <interactive>:190:2)
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-- <interactive>:192:29: error:
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-- • Couldn't match expected type ‘Sem r0 x -> IO x’
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-- with actual type ‘Sem r1 ()’
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-- • In the first argument of ‘runResourceInIO’, namely ‘foo’
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-- In the second argument of ‘($)’, namely ‘runResourceInIO foo’
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-- In the expression: runM $ runResourceInIO foo
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--
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--
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-- SOLUTION: Honestly I'm not sure!
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missingArgumentToRunResourceInIO'WRONG = ()
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spec :: Spec
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spec = parallel $ describe "Error messages" $ it "should pass the doctest" $ doctest
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[ "-isrc/"
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@ -186,7 +21,7 @@ spec = parallel $ describe "Error messages" $ it "should pass the doctest" $ doc
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, "-XTypeFamilies"
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, "-XUnicodeSyntax"
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, "test/DoctestSpec.hs"
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, "test/TypeErrors.hs"
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-- Modules that are explicitly imported for this test must be listed here
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, "src/Polysemy.hs"
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167
test/TypeErrors.hs
Normal file
167
test/TypeErrors.hs
Normal file
@ -0,0 +1,167 @@
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{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
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module TypeErrors where
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-- $setup
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-- >>> default ()
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-- >>> :m +Polysemy
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-- >>> :m +Polysemy.Output
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-- >>> :m +Polysemy.Reader
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-- >>> :m +Polysemy.Resource
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-- >>> :m +Polysemy.State
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-- >>> :m +Polysemy.Trace
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- foo :: Sem r ()
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-- foo = put ()
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'State'
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-- ...
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-- ... (Member (State ()) r) ...
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-- ...
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ambiguousMonoState = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- foo :: Sem r ()
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-- foo = put 5
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'State'
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-- ...
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-- ... (Member (State s0) r) ...
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-- ...
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-- ... 's0' directly...
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-- ...
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ambiguousPolyState = ()
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--------------------------------------------------------------------------------
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-- |
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-- TODO(sandy): should this mention 'Reader i' or just 'Reader'?
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--
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-- >>> :{
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-- interpret @Reader $ \case
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-- Ask -> undefined
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-- :}
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-- ...
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-- ... 'Reader i' is higher-order, but 'interpret' can help only
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-- ... with first-order effects.
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-- ...
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-- ... 'interpretH' instead.
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-- ...
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interpretBadFirstOrder = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- runFoldMapOutput
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-- :: forall o m r a
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-- . Monoid m
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-- => (o -> m)
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-- -> Sem (Output o ': r) a
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-- -> Sem r (m, a)
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-- runFoldMapOutput f = runState mempty . reinterpret $ \case
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-- Output o -> modify (<> f o)
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-- :}
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-- ...
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-- ... Probable cause: ...reinterpret... is applied to too few arguments
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-- ...
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tooFewArgumentsReinterpret = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- let reinterpretScrub :: Sem (Output Int ': m) a -> Sem (State Bool ': Trace ': m) a
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-- reinterpretScrub = undefined
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-- foo :: Sem '[Output Int] ()
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-- foo = pure ()
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-- foo' = reinterpretScrub foo
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-- foo'' = runState True foo'
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-- foo''' = runTraceIO foo''
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-- in runM foo'''
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'Lift'
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-- ...
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-- ... add (Member (Lift IO) '[]) ...
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-- ...
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--
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-- PROBLEM: We're trying to run more effects than exist in the eff row. This is
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-- indeed a problem, but the error message isn't helpful.
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--
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-- SOLUTION: Add a special case to `AmbiguousSend` when `r ~ '[]`.
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runningTooManyEffects'WRONG = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- foo :: Sem (State Int ': r) ()
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-- foo = put ()
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'State'
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-- ...
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-- ... (Member (State ()) State Int : r) ...
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-- ...
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--
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-- PROBLEM: There should be parentheses around `State Int : r`
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--
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-- SOLUTION: Emit parens only when the effect row is of the form `e1 ': ...`
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missingParens'WRONG = ()
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--------------------------------------------------------------------------------
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-- |
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-- >>> :{
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-- let foo :: Member Resource r => Sem r ()
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-- foo = undefined
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-- in runM $ runResourceInIO foo
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-- :}
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-- ...
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-- ... Ambiguous use of effect 'Lift'
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-- ...
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-- ... (Member (Lift IO) r0) ...
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-- ...
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-- ... Could not deduce: (Member Resource r1)
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-- ...
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--
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-- PROBLEM: This error is totally bogus. We forgot to give an argument to
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-- 'runResourceInIO'. For comparison, the standard error GHC gives in this case
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-- is significantly more helpful:
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--
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-- <interactive>:192:13: error:
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-- • Couldn't match expected type ‘Sem '[Lift m] a’
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-- with actual type ‘Sem (Resource : r0) a0 -> Sem r0 a0’
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-- • Probable cause: ‘runResourceInIO’ is applied to too few arguments
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-- In the second argument of ‘($)’, namely ‘runResourceInIO foo’
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-- In the expression: runM $ runResourceInIO foo
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-- In the expression:
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-- let
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-- foo :: Member Resource r => Sem r ()
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-- foo = undefined
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-- in runM $ runResourceInIO foo
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-- • Relevant bindings include
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-- it :: m a (bound at <interactive>:190:2)
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-- <interactive>:192:29: error:
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-- • Couldn't match expected type ‘Sem r0 x -> IO x’
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-- with actual type ‘Sem r1 ()’
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-- • In the first argument of ‘runResourceInIO’, namely ‘foo’
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-- In the second argument of ‘($)’, namely ‘runResourceInIO foo’
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-- In the expression: runM $ runResourceInIO foo
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--
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--
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-- SOLUTION: Honestly I'm not sure!
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missingArgumentToRunResourceInIO'WRONG = ()
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|
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|
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