hhefesto’s gists

hhefesto / DoesntCompile1.hs

Created October 25, 2018 15:57

	{-# LANGUAGE ScopedTypeVariables #-}
	{-# LANGUAGE NoImplicitPrelude #-}
	{-# LANGUAGE OverloadedStrings #-}
	{-# LANGUAGE TemplateHaskell #-}
	{-# LANGUAGE MultiParamTypeClasses #-}
	{-# LANGUAGE TypeFamilies #-}

	module Handler.Support where

	import Import hiding ((==.))

hhefesto / Support.hs

Last active October 24, 2018 22:00

	{-# LANGUAGE ScopedTypeVariables #-}
	{-# LANGUAGE NoImplicitPrelude #-}
	{-# LANGUAGE OverloadedStrings #-}
	{-# LANGUAGE TemplateHaskell #-}
	{-# LANGUAGE MultiParamTypeClasses #-}
	{-# LANGUAGE TypeFamilies #-}

	module Handler.Support where

	import Import hiding ((==.))

hhefesto / magic.hs

Last active October 18, 2018 18:51

From [a] to just a inside another monad

	-- This compiles fine
	getAccountInfoR :: CustomerId -> Handler Html
	getAccountInfoR customerId = do
	customer_info_list <- runDB $
	E.select $
	E.from $ \c -> do
	E.where_ (c ^. CustomerId ==. E.val customerId)
	return c
	defaultLayout $ do
	setTitle "Your Licenses"

hhefesto / PostNew.hs

Created January 18, 2018 17:49

	module Handler.PostNew where

	import Import

	getPostNewR :: Handler Html
	getPostNewR = do
	defaultLayout $ do
	$(widgetFile "posts/new")

hhefesto / internet_example.hs

Created February 3, 2016 19:49

I am working with Persist data constructors, and I would like to be able to derive generic (on the second file) just like it is done on the first file

	-----------------------------------------------------------------------------------------------------
	-- from http://seanhess.github.io/2015/08/19/practical-haskell-json-api.html
	-----------------------------------------------------------------------------------------------------

	{-# LANGUAGE DeriveGeneric #-}

	module Main where

	import Data.Monoid ((<>))
	import Data.Aeson (FromJSON, ToJSON)

hhefesto / Model.hs

Created January 5, 2016 01:25

using yesod's persistent.

	{-# LANGUAGE EmptyDataDecls #-}
	{-# LANGUAGE FlexibleContexts #-}
	{-# LANGUAGE GADTs #-}
	{-# LANGUAGE GeneralizedNewtypeDeriving #-}
	{-# LANGUAGE MultiParamTypeClasses #-}
	{-# LANGUAGE OverloadedStrings #-}
	{-# LANGUAGE QuasiQuotes #-}
	{-# LANGUAGE TemplateHaskell #-}
	{-# LANGUAGE TypeFamilies #-}

hhefesto / gist:878ec492aa6296001233

Created October 15, 2015 06:07

ghc compile error

	➜ ghc git:(ghc-stable) ✗ make
	===--- building phase 0
	make -r --no-print-directory -f ghc.mk phase=0 phase_0_builds
	make[1]: Nothing to be done for 'phase_0_builds'.
	===--- building phase 1
	make -r --no-print-directory -f ghc.mk phase=1 phase_1_builds
	"/usr/bin/ghc" -hisuf hi -osuf o -hcsuf hc -static -H32m -O -package-db libraries/bootstrapping.conf -hide-all-packages -i -ighc/. -ighc/st
	age1/build -ighc/stage1/build/autogen -Ighc/stage1/build -Ighc/stage1/build/autogen -optP-include -optPghc/stage1/build/autogen/cabal_macro
	s.h -package array-0.5.0.0 -package base-4.7.0.2 -package bytestring-0.10.4.0 -package directory-1.2.1.0 -package filepath-1.3.0.2 -package ghc
	-7.11 -package process-1.2.0.0 -package unix-2.7.0.1 -Wall -XHaskell2010 -no-user-package-db -rtsopts -odir ghc/stage1/build -hidir ghc/

hhefesto / from zsh terminal

Last active October 15, 2015 05:18

This is what i did to get the compilation error.

	sudo dnf install glibc-devel ncurses-devel gmp-devel autoconf automake libtool gcc make perl python ghc happy alex git -y
	sudo dnf install docbook-utils docbook-utils-pdf docbook-style-xsl -y
	sudo dnf install strace patch -y

	git clone --recursive git://git.haskell.org/ghc.git
	cd ghc
	git checkout ghc-7.10.2-release
	git checkout -b ghc-stable
	./boot
	./configure --prefix=$HOME

hhefesto / from zsh terminal

Last active October 15, 2015 05:19

ghc compilation error

	➜ ghc git:(ghc-stable) ✗ make
	===--- building phase 0
	make -r --no-print-directory -f ghc.mk phase=0 phase_0_builds
	libraries/bin-package-db/ghc.mk:3: libraries/bin-package-db/dist-boot/package-data.mk: No such file or directory
	"/usr/bin/ghc" -H32m -O \
	-optc-fno-stack-protector \
	\
	--make utils/ghc-cabal/Main.hs -o utils/ghc-cabal/dist/build/tmp/ghc-cabal \
	-no-user-package-db \
	-Wall -fno-warn-unused-imports -fno-warn-warnings-deprecations \

hhefesto / gist:30190745c6e4cb4f0e59

Created October 5, 2015 22:00

	➜ aleff ghc-pkg list blaze-builder
	/usr/lib64/ghc-7.8.4/package.conf.d
	/home/hefesto/.ghc/x86_64-linux-7.8.4/package.conf.d
	blaze-builder-0.3.3.4

Daniel Herrera Rendón hhefesto