Add better heuristic for build detection

scripts/build_posix.sh

@@ -82,6 +82,7 @@ install_dependencies()
 		sudo apt-get install ruby-dev build-essential rpm python-pip python-dev
 	elif command_exists brew; then
 		brew install ruby
+		brew install git
 	else
 		echo "Unable to install fpm dependencies" && exit 1
 	fi
@@ -101,6 +102,11 @@ install_dependencies()
 build_dvc()
 {
 	print_info "Building dvc binary..."
+
+  if [[ "$(uname)" != 'Linux' ]]; then
+    git apply $(pwd)/scripts/darwin.patch
+  fi
+
 	pyinstaller \
             --additional-hooks-dir $(pwd)/scripts/hooks dvc/__main__.py \
             --name dvc \

scripts/build_windows.cmd

@@ -16,11 +16,13 @@ where choco
 if %errorlevel% neq 0 (echo Error: choco not found && goto :error)
 
 choco install InnoSetup
+choco install git
 call refreshenv
 where iscc
 if %errorlevel% neq 0 (echo Error: Couldn't find Inno Setup compiler. && goto :error)
 
 echo ====== Installing requirements... ======
+call git patch scripts/patches/windows.patch
 call pip install .[all] || goto :error
 call pip install psutil || goto :error
 call dvc pull || goto :error

scripts/patches/darwin.patch

@@ -0,0 +1,20 @@
+From 71707795d27aa848d71780b84e056b4f5735650c Mon Sep 17 00:00:00 2001
+From: n3hrox <[email protected]>
+Date: Sun, 10 Nov 2019 17:35:10 +0100
+Subject: [PATCH] Darwin patch
+
+---
+ dvc/utils/build.py | 1 +
+ 1 file changed, 1 insertion(+)
+ create mode 100644 dvc/utils/build.py
+
+diff --git a/dvc/utils/build.py b/dvc/utils/build.py
+new file mode 100644
+index 00000000..3d149b9a
+--- /dev/null
++++ b/dvc/utils/build.py
+@@ -0,0 +1 @@
++PKG = "darwin"
+--
+2.17.1
+

scripts/patches/windows.patch

@@ -0,0 +1,19 @@
+From 6b53dcffe5e13cb3c196d29a495d8da9bcc26d6d Mon Sep 17 00:00:00 2001
+From: n3hrox <[email protected]>
+Date: Sun, 10 Nov 2019 15:44:14 +0100
+Subject: [PATCH] Windows patch
+
+---
+ dvc/utils/buid.py | 1 +
+ 1 file changed, 1 insertion(+)
+ create mode 100644 dvc/utils/buid.py
+
+diff --git a/dvc/utils/buid.py b/dvc/utils/buid.py
+new file mode 100644
+index 00000000..ada7a0bb
+--- /dev/null
++++ b/dvc/utils/buid.py
+@@ -0,0 +1 @@
++PKG = "windows"
+--
+2.17.1