하스켈 설치 및 Hello World 출력해보기 Quick steps to get up and running with Haskell on Ubuntu

하스켈 설치 및 Hello World 출력해보기

Quick steps to get up and running with Haskell on Ubuntu

하스켈을 설치하고 Hello World 를 출력하는 간단한 예제를 실행해보자.

먼저 가상환경을 만든다.

root@gcloudx:~# virtualenv -p python3 venvhaskell
Running virtualenv with interpreter /usr/bin/python3
Using base prefix '/usr'
New python executable in /root/venvhaskell/bin/python3
Also creating executable in /root/venvhaskell/bin/python
Installing setuptools, pip, wheel...done.
root@gcloudx:~#
 

root@gcloudx:~# cd venvhaskell
root@gcloudx:~/venvhaskell# source bin/activate
(venvhaskell) root@gcloudx:~/venvhaskell# 

Haskell Stack을 다운로드한다. Ubuntu 의 경우 리눅스의 범용 설치법을 따른다. 아래 링크를 참조한다.

https://docs.haskellstack.org/en/stable/install_and_upgrade/#linux

(venvhaskell) root@gcloudx:~/venvhaskell# curl -sSL https://get.haskellstack.org/ | sh
Detected Linux distribution: ubuntu
 
Installing dependencies...
 
패키지 목록을 읽는 중입니다... 완료
의존성 트리를 만드는 중입니다
상태 정보를 읽는 중입니다... 완료
g++ is already the newest version (4:5.3.1-1ubuntu1).
g++ 패키지는 수동설치로 지정합니다.
gcc is already the newest version (4:5.3.1-1ubuntu1).
libffi-dev is already the newest version (3.2.1-4).
libgmp-dev is already the newest version (2:6.1.0+dfsg-2).
libgmp-dev 패키지는 수동설치로 지정합니다.
make is already the newest version (4.1-6).
xz-utils is already the newest version (5.1.1alpha+20120614-2ubuntu2).
git is already the newest version (1:2.7.4-0ubuntu1.3).
gnupg is already the newest version (1.4.20-1ubuntu3.1).
libc6-dev is already the newest version (2.23-0ubuntu9).
libc6-dev 패키지는 수동설치로 지정합니다.
zlib1g-dev is already the newest version (1:1.2.8.dfsg-2ubuntu4.1).
다음 패키지가 자동으로 설치되었지만 더 이상 필요하지 않습니다:
  apt-xapian-index aptitude-common ca-certificates-java dh-apparmor fonts-dejavu-extra g++-4.8 git-bzr
  git-remote-bzr gstreamer0.10-pulseaudio gyp libatk-wrapper-java libatk-wrapper-java-jni libatkmm-1.6-1
  libboost-iostreams1.54.0 libboost-iostreams1.58.0 libc-ares-dev libc-ares2 libcairomm-1.0-1
  libcanberra-gtk3-0 libcanberra-gtk3-module libcdr-0.1-1 libclass-accessor-perl libclass-load-perl
  libcolord1 libcolorhug1 libcwidget3 libdata-optlist-perl libdee-1.0-4 libegl1-mesa-drivers libelfg0
  libept1.4.12 libgconf2-4 libgcrypt11-dev libgcrypt20-dev libghc-cgi-dev libghc-exceptions-dev
  libghc-extensible-exceptions-dev libghc-multipart-dev libghc-transformers-compat-dev libgif4 libglamor0
  libglibmm-2.4-1c2a libgnutlsxx27 libgpg-error-dev libgphoto2-port10 libgsl2 libgtkmm-2.4-1c2a
  libgtkspell0 libicu52 libidl-2-0 libidl-common libimage-magick-perl libimage-magick-q16-perl
  libimobiledevice4 libintl-perl libio-string-perl libisl10 libjasper1 libjavascriptcoregtk-3.0-0
  libjs-inherits libjs-node-uuid libllvm3.4 libmagick++-6.q16-5v5 libmagick++5 libmagickcore5
  libmagickwand5 libmariadbclient18 libmysqlclient18 libnspr4 libnss3 libnss3-nssdb libodbc1
  libopenvg1-mesa liborbit2 libpangomm-1.4-1 libparse-debianchangelog-perl libpgm-5.1-0 libplist1
  libpoppler44 libpth20 librevenge-0.0-0 libsctp1 libsigc++-2.0-0c2a libspice-server1 libstdc++-4.8-dev
  libtelepathy-glib0 libunique-1.0-0 libupower-glib1 libusbmuxd2 libuv1-dev libv8-3.14-dev libv8-3.14.5
  libvisio-0.1-1 libvpx1 libwebkitgtk-3.0-0 libwebkitgtk-3.0-common libwpd-0.10-10 libwpd-0.9-9
  libwpg-0.2-2 libwpg-0.3-3 libxapian-1.3-5 libxapian22v5 libxcb-util0 libxfce4util6 libzeitgeist-2.0-0
  libzmq3 linux-image-generic-lts-utopic lksctp-tools m17n-contrib node-abbrev node-ansi node-archy
  node-async node-block-stream node-combined-stream node-cookie-jar node-delayed-stream
  node-forever-agent node-form-data node-fstream node-fstream-ignore node-github-url-from-git node-glob
  node-graceful-fs node-gyp node-inherits node-ini node-json-stringify-safe node-lockfile node-lru-cache
  node-mime node-minimatch node-mkdirp node-mute-stream node-node-uuid node-nopt
  node-normalize-package-data node-npmlog node-once node-osenv node-qs node-read node-read-package-json
  node-request node-retry node-rimraf node-semver node-sha node-sigmund node-slide node-tar
  node-tunnel-agent node-which nodejs-dev policykit-1-gnome python-bzrlib python-colorama python-crypto
  python-dbus python-dbus-dev python-distlib python-ecdsa python-httplib2 python-keyring
  python-launchpadlib python-lazr.restfulclient python-lazr.uri python-oauth python-paramiko
  python-secretstorage python-simplejson python-wadllib python-xapian python-xdg python-zeitgeist
  python3-colorama python3-distlib python3-html5lib python3-wheel python3-xapian1.3 rlwrap xfce4-mixer
  zeitgeist zeitgeist-core zeitgeist-datahub
Use 'sudo apt autoremove' to remove them.
0개 업그레이드, 0개 새로 설치, 0개 제거 및 0개 업그레이드 안 함.
 
Using generic bindist...
 
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:--  0:00:01 --:--:--     0
100   628    0   628    0     0    221      0 --:--:--  0:00:02 --:--:--   702
100 11.4M  100 11.4M    0     0   313k      0  0:00:37  0:00:37 --:--:--  345k
Installing Stack to: /usr/local/bin/stack...
 
-------------------------------------------------------------------------------
 
Stack has been installed to: /usr/local/bin/stack
 
WARNING: '/root/.local/bin' is not on your PATH.
    For best results, please add it to the beginning of PATH in your profile.
 
(venvhaskell) root@gcloudx:~/venvhaskell#
 

경고 메시지를 해결하기 위해 /root/.bashrc 에 아래를 추가한다.

export PATH="/root/.local/bin:$PATH"

HelloWorld.hs 파일을 다음과 같이 작성한다.

#!/usr/bin/env stack
-- stack --install-ghc runghc
 
main :: IO ()
main = putStrLn "Hello World"

터미널에서 앞서 작성한 파일을 다음과 같이 실행한다. Hello World 가 출력됨을 볼 수 있다.

(venvhaskell) root@gcloudx:~/venvhaskell# stack HelloWorld.hs
Populated index cache.
Downloaded ghc-8.0.2.
Installed GHC.
Hello World

https://docs.haskellstack.org/en/stable/install_and_upgrade/#ubuntu