Fix 'wrong Python version' regex, clarify instructions, and add a testcase.

src/analyze-error.js

@@ -20,7 +20,7 @@ function isMissingPython(code) {
 }
 
 function isWrongPython(code) {
-	return /Python executable "[^"]*"  is v[^,]+, which is not supported by gyp./.test(code);
+	return /Python executable "[^"]*" is v[^,]+, which is not supported by gyp\./.test(code);
 }
 
 function isBindingSyntaxError(code) {

src/components/solution-viewer.tag

@@ -29,7 +29,7 @@ solution-viewer
 			h3 You have the wrong version of Python installed.
 			p The <code>node-gyp</code> utility, which is used for installing compiled (C++) modules with NPM, only supports Python 2. However, you only seem to have Python 3 installed.
 			p To solve this problem, follow the <a href="https://github.com/nodejs/node-gyp#installation">setup instructions for <code>node-gyp</code></a>.
-			p If you're certain that you have Python 2 installed, you may need to configure <code>npm</code> to know where it is. This is also covered in the above instructions.
+			p If you're certain that you have Python 2 installed, you may need to configure <code>npm</code> to know where it is. This is also covered in the above instructions. Specifically, you'll want to use the <code>--version</code> flag.
 
 		solution(topic="gcc")
 			h3 Your C++ compiler is too old.

testcases/2.txt

@@ -0,0 +1,48 @@
+> bcrypt@0.8.7 install /Users/xxxxxx/Documents/Github/Personal/Magnet/Apps/AccountsAPI/node_modules/bcrypt
+> node-gyp rebuild
+
+gyp ERR! configure error
+gyp ERR! stack Error: Python executable "/Users/xxxxxx/.pyenv/shims/python" is v3.5.2, which is not supported by gyp.
+gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
+gyp ERR! stack     at failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:406:14)
+gyp ERR! stack     at /usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:395:9
+gyp ERR! stack     at ChildProcess.exithandler (child_process.js:197:7)
+gyp ERR! stack     at emitTwo (events.js:106:13)
+gyp ERR! stack     at ChildProcess.emit (events.js:191:7)
+gyp ERR! stack     at maybeClose (internal/child_process.js:877:16)
+gyp ERR! stack     at Socket.<anonymous> (internal/child_process.js:334:11)
+gyp ERR! stack     at emitOne (events.js:96:13)
+gyp ERR! stack     at Socket.emit (events.js:188:7)
+gyp ERR! stack     at Pipe._handle.close [as _onclose] (net.js:493:12)
+gyp ERR! System Darwin 16.0.0
+gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
+gyp ERR! cwd /Users/xxxxxx/Documents/Github/Personal/Magnet/Apps/AccountsAPI/node_modules/bcrypt
+gyp ERR! node -v v6.6.0
+gyp ERR! node-gyp -v v3.3.1
+gyp ERR! not ok
+npm WARN eslint-config-google@0.7.1 requires a peer of eslint@>=3.8.1 but none was installed.
+npm WARN magnet@1.0.0 No description
+npm WARN magnet@1.0.0 No repository field.
+npm ERR! Darwin 16.0.0
+npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "--save"
+npm ERR! node v6.6.0
+npm ERR! npm  v3.10.3
+npm ERR! code ELIFECYCLE
+
+npm ERR! bcrypt@0.8.7 install: `node-gyp rebuild`
+npm ERR! Exit status 1
+npm ERR!
+npm ERR! Failed at the bcrypt@0.8.7 install script 'node-gyp rebuild'.
+npm ERR! Make sure you have the latest version of node.js and npm installed.
+npm ERR! If you do, this is most likely a problem with the bcrypt package,
+npm ERR! not with npm itself.
+npm ERR! Tell the author that this fails on your system:
+npm ERR!     node-gyp rebuild
+npm ERR! You can get information on how to open an issue for this project with:
+npm ERR!     npm bugs bcrypt
+npm ERR! Or if that isn't available, you can get their info via:
+npm ERR!     npm owner ls bcrypt
+npm ERR! There is likely additional logging output above.
+
+npm ERR! Please include the following file with any support request:
+npm ERR!     /Users/xxxxxx/Documents/Github/Personal/Magnet/Apps/AccountsAPI/npm-debug.log