node-sass fails to build when using an offline mirror

[Jehops]

yarn --offline fails to build node-sass.

This is using yarn 1.0.2, building node-sass-4.5.3 on FreeBSD using node 8.5.0 and an offline mirror. The issue is mentioned in issue #1911, and while FreeBSD binaries are now available (thanks @saper), building is still a problem, because specifying the location of the node headers does not work and downloading the headers is not possible when offline. The cause of the problem, in a nutshell, is that the system installation of libuv cannot be found. The header file uv.h is located in /usr/local/include by default.

Adding the equivalent to npm's --nodedir with yarn --offline config set nodedir /usr/local causes this error.

  c++ '-DNODE_GYP_MODULE_NAME=binding' '-DUSING_UV_SHARED=1' '-DUSING_V8_SHARED=1' '-DV8_DEPRECATION_WARNINGS=1' '-D_LARGEFILE_SOURCE' '-D_FILE_OFFSET_BITS=64' '-DBUILDING_NODE_EXTENSION' -I/usr/local/include/node -I/usr/local/src -I/usr/local/deps/uv/include -I/usr/local/deps/v8/include -I../../nan -I../src/libsass/include  -fPIC -pthread -Wall -Wextra -Wno-unused-parameter -m64 -O3 -fno-omit-frame-pointer -fno-rtti -fno-exceptions -std=gnu++0x -std=c++0x -MMD -MF ./Release/.deps/Release/obj.target/binding/src/binding.o.d.raw   -c -o Release/obj.target/binding/src/binding.o ../src/binding.cpp
In file included from ../src/binding.cpp:1:
../../nan/nan.h:48:10: fatal error: 'uv.h' file not found
#include <uv.h>
         ^~~~~~

Using yarn --offline config set nodedir /usr/local/include/node causes this error.

  c++ '-DNODE_GYP_MODULE_NAME=binding' '-DUSING_UV_SHARED=1' '-DUSING_V8_SHARED=1' '-DV8_DEPRECATION_WARNINGS=1' '-D_LARGEFILE_SOURCE' '-D_FILE_OFFSET_BITS=64' '-DBUILDING_NODE_EXTENSION' -I/usr/local/include/node/include/node -I/usr/local/include/node/src -I/usr/local/include/node/deps/uv/include -I/usr/local/include/node/deps/v8/include -I../../nan -I../src/libsass/include  -fPIC -pthread -Wall -Wextra -Wno-unused-parameter -m64 -O3 -fno-omit-frame-pointer -fno-rtti -fno-exceptions -std=gnu++0x -std=c++0x -MMD -MF ./Release/.deps/Release/obj.target/binding/src/binding.o.d.raw   -c -o Release/obj.target/binding/src/binding.o ../src/binding.cpp
In file included from ../src/binding.cpp:1:
../../nan/nan.h:24:10: fatal error: 'node_version.h' file not found
#include <node_version.h>
         ^~~~~~~~~~~~~~~~

I have also tried downloading the node headers tarball and placing it in various locations, including .node-gyp/8.5.0, but the http GET is still attempted during yarn install --offline.

• NPM version:
  Using yarn version 1.0.2

• Node version:
  v8.5.0

• Node Process:

{ http_parser: '2.7.0',
  node: '8.4.0',
  v8: '6.0.286.52',
  uv: '1.14.1',
  zlib: '1.2.11',
  ares: '1.12.0',
  modules: '57',
  nghttp2: '1.22.0',
  openssl: '1.0.2l',
  icu: '59.1',
  unicode: '9.0',
  cldr: '31.0.1',
  tz: '2017b' }

• Node Platform
  FreeBSD

• Node architecture (node -p process.arch):
  x64

• node-sass version
  4.5.3

[saper]

Can you check if nodejs/node-gyp#1264 along with an optional but recommended #2070 fix this?

[Jehops]

I just tested nodejs/node-gyp#1264 and the builds finishes successfully. Thank you!