c0d90b7...master · heroku-buildpack-stack

git.iko.soy/heroku-buildpack-stack

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5 files changed+98−27

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LICENSE+8 Procfile.example+1 README.md+44−2 bin/compile+44−24 bin/detect+1−1

LICENSEnew file+8

@@ -0,0 +1,8 @@

1+The MIT License (MIT)

4+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

6+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

8+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Procfile.examplenew file+1

@@ -0,0 +1 @@

1+web: YOURAPPNAME-exe # $ cat *.cabal | grep executable

README.md+44−2

@@ -2,16 +2,58 @@

33[Heroku buildpack][2] for [Stack][3]. Based on the excellent [heroku-buildpack-ghc][4]

5−### Useage

5+### Usage

77Create an app with this buildpack:

99 $ heroku create --buildpack https://github.com/mfine/heroku-buildpack-stack.git

1010

11−Set this buildpack on an exiting app:

11+Set this buildpack on an existing app:

1212

1313 $ heroku buildpacks:set https://github.com/mfine/heroku-buildpack-stack

1414

15+Binary executables are placed in `/app/.local/bin/` after compilation, a directory which Heroku includes in your `$PATH`, so assuming that your application is [binding to `$PORT`](https://devcenter.heroku.com/articles/dynos#web-dynos), you can serve your app by [creating a `Procfile`](https://devcenter.heroku.com/articles/procfile) at your project root that defines a `web` process type for the `executable` defined in your `.cabal` file:

16+

17+ $ cat *.cabal | grep executable

18+ executable YOURAPPNAME-exe

19+

20+ $ echo "web: YOURAPPNAME-exe" >> Procfile

21+

22+

23+### Templating stack.yaml

24+

25+To avoid committing secrets into `stack.yaml` for access to private

26+repos, an app's config vars values can be substituted for tags

27+enclosed in double brackets. For example, given a `stack.yaml` containing:

28+

29+ packages:

30+ -location:

31+ git: https://mfine:{{GITPASS}}@github.com/mfine/heroku-buildpack-stack.git

32+

33+and an application with config vars:

34+

35+ $ heroku config -app calm-storm-51595

36+ === murmuring-beyond-51595 Config Vars

37+ GITPASS: abc123

38+ $

39+

40+before compilation, the `stack.yaml` will be substituted as follows:

41+

42+ packages:

43+ -location:

44+ git: https://mfine:abc123@github.com/mfine/heroku-buildpack-stack.git

45+

46+

47+### Makefile Support

48+

49+This buildpack now supports an optional Makefile, in case you need to coordinate

50+other build steps with Stack. It assumes that the Makefile includes a `make

51+install` target that uses the Stack build command with the flag `--copy-bins`.

52+For example, a possible `install` target configuration in the Makefile could be:

53+

54+ install:

55+ stack build --copy-bins

56+

1557[1]: https://github.com/mfine/heroku-buildpack-stack

1658[2]: http://devcenter.heroku.com/articles/buildpacks

1759[3]: https://github.com/commercialhaskell/stack

bin/compile+44−24

@@ -13,6 +13,8 @@ function speak (){

1313 echo "-----> $(date -u '+%Y-%m-%d_%H:%M:%S') $1"

1414}

1515

16+speak "Starting..."

17+

1719if [ -d "$ENV_DIR" ]; then

1820 speak "Exporting config vars"

@@ -24,7 +26,7 @@ if [ -d "$ENV_DIR" ]; then

2426fi

2527

2628WORK_DIR=/app

27−mkdir -p "$WORK_DIR/vendor"

29+cp -Rp "$BUILD_DIR/." "$WORK_DIR"

2830mkdir -p "$WORK_DIR/vendor/bin"

2931mkdir -p "$WORK_DIR/vendor/ghc-libs"

3032

@@ -43,9 +45,10 @@ function set-default-env (){

4345}

4446

4547export LANG=en_US.UTF-8

46−export LIBRARY_PATH=$WORK_DIR/vendor/ghc-libs:/usr/lib:$LIBRARY_PATH

48+export LIBRARY_PATH=$WORK_DIR/vendor/ghc-libs:$WORK_DIR/vendor/lib:/usr/lib:$LIBRARY_PATH

4749export LD_LIBRARY_PATH=$LIBRARY_PATH

4850export PATH=$WORK_DIR/.local/bin:$WORK_DIR/vendor/bin:$PATH

51+export STACK_ROOT=$CACHE_DIR/.stack

4952

5053########## gmp #####################################################

5154LIBGMP_VER=${LIBGMP_VER:-6.0.0a}

@@ -57,46 +60,63 @@ if [ ! -e "$LIBGMP_DIR" ]; then

5760 curl -# -L "$LIBGMP_URL" | tar xz -C "$LIBGMP_DIR"

5861fi

5962speak "Restoring $LIBGMP_VER files from cache"

60−#find "$LIBGMP_DIR/ghc-libs/" -exec cp -rP '{}' "$WORK_DIR/vendor/ghc-libs/" \;

61−cp -rP "$LIBGMP_DIR/ghc-libs/*" "$WORK_DIR/vendor/ghc-libs/"

63+cp -Rp "$LIBGMP_DIR/ghc-libs/." "$WORK_DIR/vendor/ghc-libs"

6264

6365########## stack exe ###############################################

64−STACK_VER=${STACK_VER:-0.1.3.1}

65−STACK_URL=${STACK_URL:-https://github.com/commercialhaskell/stack/releases/download/v"$STACK_VER"/stack-"$STACK_VER"-x86_64-linux.gz}

66−STACK_EXE="$CACHE_DIR/stack-$STACK_VER"

66+STACK_VER=${STACK_VER:-2.1.3}

67+STACK_URL=${STACK_URL:-https://github.com/commercialhaskell/stack/releases/download/v"$STACK_VER"/stack-"$STACK_VER"-linux-x86_64.tar.gz}

68+STACK_DIR="$CACHE_DIR/stack-$STACK_VER"

69+STACK_EXE="$STACK_DIR/stack"

6770if [ ! -e "$STACK_EXE" ]; then

6871 speak "Downloading stack-$STACK_VER"

69− curl -# -L "$STACK_URL" | gunzip > "$STACK_EXE"

72+ mkdir -p "$STACK_DIR"

73+ curl -# -L "$STACK_URL" | tar xz -C "$STACK_DIR" --strip-components=1

7074fi

7175speak "Restoring stack-$STACK_VER"

72−cp -P "$STACK_EXE" "$WORK_DIR/vendor/bin/stack"

76+cp "$STACK_EXE" "$WORK_DIR/vendor/bin/stack"

7377chmod a+x "$WORK_DIR/vendor/bin/stack"

7478

75−########## stack dir ###############################################

76−STACK_DIR="$CACHE_DIR/.stack"

77−if [ -e "$STACK_DIR" ]; then

78− speak "Restoring .stack"

79− cp -rP "$STACK_DIR" "$WORK_DIR"

79+########## stack vars ##############################################

80+if [ -d "$ENV_DIR" ]; then

81+ speak "Substituting stack vars"

82+ perl -p -i -e 's/\{\{([^}]+)\}\}/defined$ENV{$1}?$ENV{$1}:$&/eg' "$BUILD_DIR/stack.yaml"

8083fi

8184

8285########## project build ###########################################

83−speak "Running stack"

84−cd "$BUILD_DIR"

85−stack setup

86−stack build --copy-bins

86+SANDBOX_DIR="$CACHE_DIR/.stack-work"

87+if [ -e "$SANDBOX_DIR" ]; then

88+ speak "Restoring .stack-work"

89+ cp -Rp "$SANDBOX_DIR" "$WORK_DIR"

90+else

91+ mkdir -p "$SANDBOX_DIR"

92+fi

8793

88−if [ ! -e "$STACK_DIR" ]; then

89− speak "Caching .stack"

90− cp -rP "$WORK_DIR/.stack" "$CACHE_DIR"

94+speak "Running stack"

95+cd "$WORK_DIR"

96+# Makefile support (if you need other build tools than Stack that you need to use in conjunction)

97+if [ -f "$BUILD_DIR/Makefile" ]; then

98+ speak "Makefile detected"

99+ make

100+ make install

101+else

102+ stack setup

103+ stack clean

104+ stack build --ghc-options='-O2' --copy-bins

91105fi

92106

93107# Set context environment variables.

94−set-env PATH "/app/.local/bin:$PATH"

95−set-default-env LIBRARY_PATH /app/vendor/ghc-libs:/usr/lib

96−set-default-env LD_LIBRARY_PATH /app/vendor/ghc-libs:/usr/lib

108+set-env PATH "$WORK_DIR/.local/bin:$WORK_DIR/vendor/bin:\$PATH"

109+set-default-env LIBRARY_PATH "$WORK_DIR/vendor/ghc-libs:$WORK_DIR/vendor/lib:/usr/lib"

110+set-default-env LD_LIBRARY_PATH "$WORK_DIR/vendor/ghc-libs:$WORK_DIR/vendor/lib:/usr/lib"

97111

98112speak "Making stack binaries available"

99113mkdir -p "$BUILD_DIR/vendor"

100114mkdir -p "$BUILD_DIR/.local"

101115mv "$WORK_DIR/vendor/ghc-libs" "$BUILD_DIR/vendor"

102116mv "$WORK_DIR/.local/bin" "$BUILD_DIR/.local"

117+

118+speak "Caching .stack-work"

119+rsync -avq "$WORK_DIR/.stack-work/" "$SANDBOX_DIR"

120+cp -Rp "$WORK_DIR/.stack-work" "$BUILD_DIR"

121+

122+speak "Finished!"

bin/detect+1−1

@@ -1,6 +1,6 @@

11#!/usr/bin/env bash

3−if [ -f "$1"/stack.yaml ]; then

3+if [ -n "$(find "$1" -name stack.yaml -maxdepth 1 -print -quit)" ]; then

44 echo "Haskell"

55 exit 0

66else