haskell #15

Merged
mfocko merged 3 commits from haskell into main 2020-10-13 09:02:42 +02:00
7 changed files with 165 additions and 10 deletions

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---
- name: Install ghc and hlint
dnf:
name:
- "@ghc:8.10"
- hlint
state: present

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- flameshot - flameshot
state: present state: present
- name: Install all packages for shell - include: shell.yml
dnf: - include: haskell.yml
name:
- zsh
- tmux
- neovim
- emacs
state: present

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---
- name: Install all packages for shell
dnf:
name:
- zsh
- tmux
- neovim
- emacs
state: present

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---
- name: Create directories for configuration
shell: mkdir ~/.ghc
- name: Install ghci.conf
template:
src: templates/ghci.conf.j2
dest: ~/.ghc/ghci.conf
- name: Install HLint.hs
template:
src: templates/HLint.hs.j2
dest: ~/.ghc/HLint.hs

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import "hint" HLint.Builtin.All
import "hint" HLint.Default
import "hint" HLint.Dollar
import Data.Map
import Control.Arrow
import Control.Monad
import Control.Monad.State
warn = (\ x -> f $ g x) ==> f . g
-- List
warn = cycle [c] ==> repeat c
warn = x == [] ==> null x where note = "generalize"
warn = [] == x ==> null x where note = "generalize"
warn = x /= [] ==> not (null x) where note = "generalize"
warn = [] /= x ==> not (null x) where note = "generalize"
warn = fst (unzip x) ==> map fst x
warn = snd (unzip x) ==> map snd x
warn "Use not . null" = length x > 0 ==> not (null x) where note = "increases laziness"
warn "Use not . null" = length x >= 1 ==> not (null x) where note = "increases laziness"
-- Map
warn = map fst (Data.Map.toList x) ==> Data.Map.keys x
warn = map snd (Data.Map.toList x) ==> Data.Map.elems x
warn = foldr f v (Data.Map.elems x) ==> Data.Map.foldr f v x
warn = Data.Maybe.fromMaybe d (Data.Map.lookup k m) ==> Data.Map.findWithDefault d k m
-- Arrows
warn = id *** id ==> id
warn = Control.Arrow.first id ==> id
warn = Control.Arrow.second id ==> id
warn = Control.Arrow.first f (Control.Arrow.second g x) ==> (f Control.Arrow.*** g) x
warn = Control.Arrow.second f (Control.Arrow.first g x) ==> (g Control.Arrow.*** f) x
warn = Control.Arrow.first f (Control.Arrow.first g x) ==> Control.Arrow.first (f . g) x
warn = Control.Arrow.second f (Control.Arrow.second g x) ==> Control.Arrow.second (f . g) x
warn = (a *** b) ((c &&& d) x) ==> ((a . c) Control.Arrow.&&& (b . d)) x
warn = (a *** b) ((c *** d) x) ==> ((a . c) Control.Arrow.*** (b . d)) x
warn = Control.Arrow.first f ((a *** b) x) ==> ((f . a) Control.Arrow.*** b) x
warn = Control.Arrow.second f ((a *** b) x) ==> (a Control.Arrow.*** (f . b)) x
warn = (a *** b) (Control.Arrow.first f x) ==> ((a . f) Control.Arrow.*** b) x
warn = (a *** b) (Control.Arrow.second f x) ==> (a Control.Arrow.*** (b . f)) x
warn = Control.Arrow.first f ((a &&& b) x) ==> ((f . a) Control.Arrow.&&& b) x
warn = Control.Arrow.second f ((a &&& b) x) ==> (a Control.Arrow.&&& (f . b)) x
-- State
warn = fmap f Control.Monad.State.get ==> Control.Monad.State.gets f
warn = Control.Monad.liftM f Control.Monad.State.get ==> Control.Monad.State.gets f

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-- GHCi customization file
-- vim: syntax=haskell expandtab
-- some sections are comented out with comments starting with -- &,
-- so you can uncomment them by removing this prefix to enamble them
-- note: block comments do not work here, the same holds for layout rule
-- Save to ~/.ghc/ghci.conf
-- Most of the code was taken from the official Haskell wiki.
-- https://wiki.haskell.org/GHC/GHCi
-- set coloured prompt with loaded modules on separate line
-- <https://coderwall.com/p/13h9bw/colored-ghci-prompt-with-and-modules-on-separate-lines>
-- :set prompt "\ESC[1;34m%s\n\ESC[0;34m\x03BB> \ESC[m"
-- -bold-blue- -blue---- -lambda -black-
-- Set all warning on by default
-- but disable type defaults warning
:set -Wall
:set -Wno-type-defaults
-- The following definitions were taken from "getting more out of ghci", the mini-tutorial
-- <https://mail.haskell.org/pipermail/haskell-cafe/2007-September/032260.html>
-- make commands helpful
:{
let { cmdHelp _ msg "--help" = return $ "putStrLn " ++ show msg
; cmdHelp cmd _ other = cmd other }
:}
-- :pwd, :ls
let pwd _ = return "System.Directory.getCurrentDirectory >>= putStrLn"
:def pwd cmdHelp pwd ":pwd\t\t\t-- print working directory"
:{
let ls p = return $ "mapM_ putStrLn =<< System.Directory.getDirectoryContents "++show path
where {path = if (null p) then "." else p}
:}
:def ls cmdHelp ls ":ls [<path>]\t\t-- list directory (\".\" by default)"
-- :redir
:{
let redir varcmd =
case break Data.Char.isSpace varcmd of
{ (var,_:cmd) -> return $ unlines
[":set -fno-print-bind-result"
,"tmp <- System.Directory.getTemporaryDirectory"
,"(f,h) <- System.IO.openTempFile tmp \"ghci\""
,"sto <- GHC.IO.Handle.hDuplicate System.IO.stdout"
,"GHC.IO.Handle.hDuplicateTo h System.IO.stdout"
,"System.IO.hClose h"
,cmd
,"GHC.IO.Handle.hDuplicateTo sto System.IO.stdout"
,"let readFileNow f = readFile f >>= \\t->length t `seq` return t"
,var++" <- readFileNow f"
,"System.Directory.removeFile f"]
; _ -> return "putStrLn \"usage: :redir <var> <cmd>\"" }
:}
:def redir cmdHelp redir ":redir <var> <cmd>\t-- execute <cmd>, redirecting stdout to <var>"
-- :hlint
-- requires hlint executable in PATH
-- tries to load ~/.ghc/HLint.hs with additional hints
:{
:def hlint \extra -> return $ unlines
[":unset +t +s"
,":set -w"
,":redir hlintvar1 :show modules"
,":cmd return $ \":! hlint --color --hint ~/.ghc/HLint.hs \" ++ unwords (map (takeWhile (/=',') . drop 2 . dropWhile (/= '(')) $ lines hlintvar1) ++ \" \" ++ " ++ show extra
]
:}

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block: block:
- shell: mkdir -p ~/.local/bin - shell: mkdir -p ~/.local/bin
- shell: mkdir -p ~/.local/share - shell: mkdir -p ~/.local/share
- shell: mkdir -p ~/.config/Code\ -\ Insiders/User - shell: mkdir -p "~/.config/Code\ -\ Insiders/User"
- name: Install VSCode script - name: Install VSCode script
template: template:
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- name: Install VSCode configuration - name: Install VSCode configuration
template: template:
src: templates/{{ item }}.json.j2 src: templates/{{ item }}.json.j2
dest: ~/.config/Code\ -\ Insiders/User/{{ item }}.json dest: "~/.config/Code\ -\ Insiders/User/{{ item }}.json"
loop: loop:
- settings - settings
- keybindings - keybindings