Question

我正在尝试运行compress（django compressor）以最小化CSS个实例上的js和Heroku个文件，但我不能安装less。

构建进度日志

-----> Node.js app detected
-----> Creating runtime environment

       NPM_CONFIG_LOGLEVEL=error
       NPM_CONFIG_PRODUCTION=true
       NODE_ENV=production
       NODE_MODULES_CACHE=true
-----> Installing binaries
       engines.node (package.json):  4.1.1
       engines.npm (package.json):   unspecified (use default)

       Downloading and installing node 4.1.1...
       Using default npm version: 2.14.4
-----> Restoring cache
       Loading 2 from cacheDirectories (default):
       - node_modules (not cached - skipping)
       - bower_components (not cached - skipping)
-----> Building dependencies
       Installing node modules (package.json)
-----> Caching build
       Clearing previous node cache
       Saving 2 cacheDirectories (default):
       - node_modules (nothing to cache)
       - bower_components (nothing to cache)
-----> Build succeeded!
       └── (empty)

-----> Python app detected
     $ pip install -r requirements.txt
-----> Running post-compile hook
npm http GET https://registry.npmjs.org/less
npm http 200 https://registry.npmjs.org/less
npm http GET https://registry.npmjs.org/less/-/less-2.7.1.tgz
npm http 200 https://registry.npmjs.org/less/-/less-2.7.1.tgz
npm WARN engine less@2.7.1: wanted: {"node":">=0.12"} (current: {"node":"v0.8.12","npm":"1.1.63"})
npm http GET https://registry.npmjs.org/errno
npm http GET https://registry.npmjs.org/graceful-fs
npm http GET https://registry.npmjs.org/image-size
npm http GET https://registry.npmjs.org/mime
npm http GET https://registry.npmjs.org/mkdirp
npm http GET https://registry.npmjs.org/promise
npm http GET https://registry.npmjs.org/source-map
npm http 200 https://registry.npmjs.org/mkdirp
npm http 200 https://registry.npmjs.org/mime
npm http 200 https://registry.npmjs.org/image-size
npm http 200 https://registry.npmjs.org/graceful-fs
npm WARN optional dep failed, continuing mkdirp@^0.5.0
npm WARN optional dep failed, continuing mime@^1.2.11
npm WARN optional dep failed, continuing graceful-fs@^4.1.2
npm http GET https://registry.npmjs.org/image-size/-/image-size-0.5.1.tgz
npm http 200 https://registry.npmjs.org/source-map
npm WARN optional dep failed, continuing source-map@^0.5.3
npm http 200 https://registry.npmjs.org/image-size/-/image-size-0.5.1.tgz
npm http 200 https://registry.npmjs.org/errno
npm WARN optional dep failed, continuing errno@^0.1.1
npm http 200 https://registry.npmjs.org/promise
npm WARN optional dep failed, continuing promise@^7.1.1
npm WARN engine image-size@0.5.1: wanted: {"node":">=0.10.0"} (current: {"node":"v0.8.12","npm":"1.1.63"})
less@2.7.1 node_modules/less
└── image-size@0.5.1
-----> Discovering process types
       Procfile declares types -> web
-----> Compressing...
       Done: 72.8M
-----> Launching...
       Released v159
       https://<my-app>.herokuapp.com/ deployed to Heroku

的package.json

{
  "name": "myapp",
  "description": "a really cool test",
  "version": "1.0.0",
  "engines": {
    "node": "4.1.1"
  }
}

post_compile hook

#!/usr/bin/env bash
export PATH=/app/.heroku/node/bin:$PATH
npm install less

为什么这不起作用？看起来Node.js安装的正确版本已经安装，但之后会以某种方式从$PATH中删除。我猜测$PATH在多个构建包之间不是持久的。有什么想法吗？

Answer 1

不确定为什么要在post_compile挂钩中安装less。为什么不直接将它添加到你的package.json中，运行以下命令（在你的开发环境中），然后将修改后的package.json添加到推送到Heroku的git repo中：

npm install less --save

Heroku持久化$ PATH与多个buildpacks

1 个答案: