From d835a9cdc581791d85e2b8bfea2858123b2458f2 Mon Sep 17 00:00:00 2001
From: Ikram Ali <mrikram1989@gmail.com>
Date: Tue, 22 Jun 2021 12:43:26 +0500
Subject: [PATCH] [setup] version tag added to Haystack fix #1175 (#1216)

---
 haystack/__init__.py |  1 +
 haystack/_version.py |  1 +
 setup.py             | 21 +++++++++++++++++++--
 3 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 haystack/_version.py

diff --git a/haystack/__init__.py b/haystack/__init__.py
index 677f71255..f926fe746 100644
--- a/haystack/__init__.py
+++ b/haystack/__init__.py
@@ -4,6 +4,7 @@ import pandas as pd
 from haystack.schema import Document, Label, MultiLabel, BaseComponent
 from haystack.finder import Finder
 from haystack.pipeline import Pipeline
+from haystack._version import __version__
 
 pd.options.display.max_colwidth = 80
 
diff --git a/haystack/_version.py b/haystack/_version.py
new file mode 100644
index 000000000..3e2f46a3a
--- /dev/null
+++ b/haystack/_version.py
@@ -0,0 +1 @@
+__version__ = "0.9.0"
diff --git a/setup.py b/setup.py
index 341f6dbae..4f890a429 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,5 @@
+import os
+import re
 from io import open
 
 from setuptools import find_packages, setup
@@ -45,9 +47,24 @@ def get_dependency_links(filename):
 dependency_links = get_dependency_links('requirements.txt')
 parsed_requirements = parse_requirements('requirements.txt')
 
+
+def versionfromfile(*filepath):
+    infile = os.path.join(*filepath)
+    with open(infile) as fp:
+        version_match = re.search(
+                r"^__version__\s*=\s*['\"]([^'\"]*)['\"]", fp.read(), re.M
+        )
+        if version_match:
+            return version_match.group(1)
+        raise RuntimeError("Unable to find version string in {}.".format(infile))
+
+
+here = os.path.abspath(os.path.dirname(__file__))
+_version: str = versionfromfile(here, "haystack", "_version.py")
+
 setup(
     name="farm-haystack",
-    version="0.9.0",
+    version=_version,
     author="Malte Pietsch, Timo Moeller, Branden Chan, Tanay Soni",
     author_email="malte.pietsch@deepset.ai",
     description="Neural Question Answering & Semantic Search at Scale. Use modern transformer based models like BERT to find answers in large document collections",
@@ -56,7 +73,7 @@ setup(
     keywords="QA Question-Answering Reader Retriever semantic-search search BERT roberta albert squad mrc transfer-learning language-model transformer",
     license="Apache",
     url="https://github.com/deepset-ai/haystack",
-    download_url="https://github.com/deepset-ai/haystack/archive/0.9.0.tar.gz",
+    download_url=f"https://github.com/deepset-ai/haystack/archive/{_version}.tar.gz",
     packages=find_packages(exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
     dependency_links=dependency_links,
     install_requires=parsed_requirements,