amoghrajesh commented on code in PR #34714:
URL: https://github.com/apache/airflow/pull/34714#discussion_r1345182796


##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"

Review Comment:
   Need not be a heading. Only bold is enough



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+By default `pip install` in Airflow 2.0 installs only the provider packages 
that are needed by the extras and
+install them as packages from PyPI rather than from local sources:
+
+pip install .[google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+You can upgrade just airflow, without paying attention to provider's 
dependencies by using 'constraints-no-providers'
+constraint files. This allows you to keep installed provider packages.
+
+pip install . --upgrade \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-no-providers-3.8.txt";
+
+
+You can also install airflow in "editable mode" (with -e) flag and then 
provider packages are
+available directly from the sources (and the provider packages installed from 
PyPI are UNINSTALLED in
+order to avoid having providers in two places. And `provider.yaml` files are 
used to discover capabilities
+of the providers which are part of the airflow source code.
+
+You can read more about `provider.yaml` and community-managed providers in
+https://airflow.apache.org/docs/apache-airflow-providers/index.html for 
developing custom providers
+and in ``CONTRIBUTING.rst`` for developing community maintained providers.
+
+This is useful if you want to develop providers:
+
+pip install -e . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions

Review Comment:
   This need not be a heading. Just a bold text is fine



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+By default `pip install` in Airflow 2.0 installs only the provider packages 
that are needed by the extras and
+install them as packages from PyPI rather than from local sources:
+
+pip install .[google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat

Review Comment:
   These dont need to be headings



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly

Review Comment:
   Same comment as above



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql

Review Comment:
   +1 move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+By default `pip install` in Airflow 2.0 installs only the provider packages 
that are needed by the extras and
+install them as packages from PyPI rather than from local sources:
+
+pip install .[google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+You can upgrade just airflow, without paying attention to provider's 
dependencies by using 'constraints-no-providers'
+constraint files. This allows you to keep installed provider packages.
+
+pip install . --upgrade \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-no-providers-3.8.txt";

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+By default `pip install` in Airflow 2.0 installs only the provider packages 
that are needed by the extras and
+install them as packages from PyPI rather than from local sources:
+
+pip install .[google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+You can upgrade just airflow, without paying attention to provider's 
dependencies by using 'constraints-no-providers'
+constraint files. This allows you to keep installed provider packages.
+
+pip install . --upgrade \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-no-providers-3.8.txt";
+
+
+You can also install airflow in "editable mode" (with -e) flag and then 
provider packages are
+available directly from the sources (and the provider packages installed from 
PyPI are UNINSTALLED in
+order to avoid having providers in two places. And `provider.yaml` files are 
used to discover capabilities
+of the providers which are part of the airflow source code.
+
+You can read more about `provider.yaml` and community-managed providers in
+https://airflow.apache.org/docs/apache-airflow-providers/index.html for 
developing custom providers
+and in ``CONTRIBUTING.rst`` for developing community maintained providers.
+
+This is useful if you want to develop providers:
+
+pip install -e . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+You can also skip installing provider packages from PyPI by setting 
INSTALL_PROVIDERS_FROM_SOURCE to "true".
+In this case Airflow will be installed in non-editable mode with all providers 
installed from the sources.
+Additionally `provider.yaml` files will also be copied to providers folders 
which will make the providers
+discoverable by Airflow even if they are not installed from packages in this 
case.
+
+INSTALL_PROVIDERS_FROM_SOURCES="true" pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+Airflow can be installed with extras to install some additional features (for 
example 'async' or 'doc' or
+to install automatically providers and all dependencies needed by that 
provider:
+
+pip install .[async,google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+The list of available extras:
+
+### START EXTRAS HERE
+aiobotocore, airbyte, alibaba, all, all_dbs, amazon, apache.atlas, 
apache.beam, apache.cassandra,
+apache.drill, apache.druid, apache.flink, apache.hdfs, apache.hive, 
apache.impala, apache.kafka,
+apache.kylin, apache.livy, apache.pig, apache.pinot, apache.spark, 
apache.sqoop, apache.webhdfs,
+apprise, arangodb, asana, async, atlas, atlassian.jira, aws, azure, cassandra, 
celery, cgroups,
+cloudant, cncf.kubernetes, common.sql, crypto, dask, daskexecutor, databricks, 
datadog, dbt.cloud,
+deprecated_api, devel, devel_all, devel_ci, devel_hadoop, dingding, discord, 
doc, doc_gen, docker,
+druid, elasticsearch, exasol, facebook, ftp, gcp, gcp_api, github, 
github_enterprise, google,
+google_auth, grpc, hashicorp, hdfs, hive, http, imap, influxdb, jdbc, jenkins, 
kerberos, kubernetes,
+ldap, leveldb, microsoft.azure, microsoft.mssql, microsoft.psrp, 
microsoft.winrm, mongo, mssql,
+mysql, neo4j, odbc, openfaas, openlineage, opsgenie, oracle, otel, pagerduty, 
pandas, papermill,
+password, pinot, plexus, postgres, presto, rabbitmq, redis, s3, salesforce, 
samba, segment,
+sendgrid, sentry, sftp, singularity, slack, smtp, snowflake, spark, sqlite, 
ssh, statsd, tableau,
+tabular, telegram, trino, vertica, virtualenv, webhdfs, winrm, yandex, zendesk
+### END EXTRAS HERE
+
+### For installing Airflow in development environments - see CONTRIBUTING.rst
+
+### COMPILING FRONT-END ASSETS (in case you see "Please make sure to build the 
frontend in static/ directory and then restart the server")
+### Optional : Installing yarn - https://classic.yarnpkg.com/en/docs/install
+
+python setup.py compile_assets

Review Comment:
   Move to a code block



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+By default `pip install` in Airflow 2.0 installs only the provider packages 
that are needed by the extras and
+install them as packages from PyPI rather than from local sources:
+
+pip install .[google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+You can upgrade just airflow, without paying attention to provider's 
dependencies by using 'constraints-no-providers'
+constraint files. This allows you to keep installed provider packages.
+
+pip install . --upgrade \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-no-providers-3.8.txt";
+
+
+You can also install airflow in "editable mode" (with -e) flag and then 
provider packages are
+available directly from the sources (and the provider packages installed from 
PyPI are UNINSTALLED in
+order to avoid having providers in two places. And `provider.yaml` files are 
used to discover capabilities
+of the providers which are part of the airflow source code.
+
+You can read more about `provider.yaml` and community-managed providers in
+https://airflow.apache.org/docs/apache-airflow-providers/index.html for 
developing custom providers
+and in ``CONTRIBUTING.rst`` for developing community maintained providers.
+
+This is useful if you want to develop providers:
+
+pip install -e . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+You can also skip installing provider packages from PyPI by setting 
INSTALL_PROVIDERS_FROM_SOURCE to "true".
+In this case Airflow will be installed in non-editable mode with all providers 
installed from the sources.
+Additionally `provider.yaml` files will also be copied to providers folders 
which will make the providers
+discoverable by Airflow even if they are not installed from packages in this 
case.
+
+INSTALL_PROVIDERS_FROM_SOURCES="true" pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+Airflow can be installed with extras to install some additional features (for 
example 'async' or 'doc' or
+to install automatically providers and all dependencies needed by that 
provider:
+
+pip install .[async,google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+The list of available extras:
+
+### START EXTRAS HERE
+aiobotocore, airbyte, alibaba, all, all_dbs, amazon, apache.atlas, 
apache.beam, apache.cassandra,
+apache.drill, apache.druid, apache.flink, apache.hdfs, apache.hive, 
apache.impala, apache.kafka,
+apache.kylin, apache.livy, apache.pig, apache.pinot, apache.spark, 
apache.sqoop, apache.webhdfs,
+apprise, arangodb, asana, async, atlas, atlassian.jira, aws, azure, cassandra, 
celery, cgroups,
+cloudant, cncf.kubernetes, common.sql, crypto, dask, daskexecutor, databricks, 
datadog, dbt.cloud,
+deprecated_api, devel, devel_all, devel_ci, devel_hadoop, dingding, discord, 
doc, doc_gen, docker,
+druid, elasticsearch, exasol, facebook, ftp, gcp, gcp_api, github, 
github_enterprise, google,
+google_auth, grpc, hashicorp, hdfs, hive, http, imap, influxdb, jdbc, jenkins, 
kerberos, kubernetes,
+ldap, leveldb, microsoft.azure, microsoft.mssql, microsoft.psrp, 
microsoft.winrm, mongo, mssql,
+mysql, neo4j, odbc, openfaas, openlineage, opsgenie, oracle, otel, pagerduty, 
pandas, papermill,
+password, pinot, plexus, postgres, presto, rabbitmq, redis, s3, salesforce, 
samba, segment,
+sendgrid, sentry, sftp, singularity, slack, smtp, snowflake, spark, sqlite, 
ssh, statsd, tableau,
+tabular, telegram, trino, vertica, virtualenv, webhdfs, winrm, yandex, zendesk
+### END EXTRAS HERE
+
+### For installing Airflow in development environments - see CONTRIBUTING.rst

Review Comment:
   Need not be a heading. Just bold is enough



##########
INSTALL.md:
##########
@@ -0,0 +1,117 @@
+# INSTALL / BUILD instructions for Apache Airflow
+
+This is a generic installation method that requires a number of dependencies 
to be installed.
+
+Depending on your system you might need different prerequisites, but the 
following
+systems/prerequisites are known to work:
+
+Linux (Debian Bullseye and Linux Mint Debbie):
+
+sudo apt install build-essential python3-dev libsqlite3-dev openssl \
+                 sqlite default-libmysqlclient-dev libmysqlclient-dev 
postgresql
+
+On Ubuntu 20.04 you may get an error of mariadb_config not found
+and mysql_config not found.
+
+Install MariaDB development headers:
+sudo apt-get install libmariadb-dev libmariadbclient-dev
+
+MacOS (Mojave/Catalina):
+
+brew install sqlite mysql postgresql
+
+### [required] fetch the tarball and untar the source move into the directory 
that was untarred.
+
+### [optional] run Apache RAT (release audit tool) to validate license headers
+### RAT docs here: https://creadur.apache.org/rat/. Requires Java and Apache 
Rat
+java -jar apache-rat.jar -E ./.rat-excludes -d .
+
+### [optional] Airflow pulls in quite a lot of dependencies in order
+### to connect to other services. You might want to test or run Airflow
+### from a virtual env to make sure those dependencies are separated
+### from your system wide versions
+
+python3 -m venv PATH_TO_YOUR_VENV
+source PATH_TO_YOUR_VENV/bin/activate
+
+### [required] building and installing by pip (preferred)
+pip install .
+
+### or directly
+python setup.py install
+
+### You can also install recommended version of the dependencies by using
+### constraint-python<PYTHON_MAJOR_MINOR_VERSION>.txt files as constraint 
file. This is needed in case
+### you have problems with installing the current requirements from PyPI.
+### There are different constraint files for different python versions. For 
example"
+
+pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+By default `pip install` in Airflow 2.0 installs only the provider packages 
that are needed by the extras and
+install them as packages from PyPI rather than from local sources:
+
+pip install .[google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+
+You can upgrade just airflow, without paying attention to provider's 
dependencies by using 'constraints-no-providers'
+constraint files. This allows you to keep installed provider packages.
+
+pip install . --upgrade \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-no-providers-3.8.txt";
+
+
+You can also install airflow in "editable mode" (with -e) flag and then 
provider packages are
+available directly from the sources (and the provider packages installed from 
PyPI are UNINSTALLED in
+order to avoid having providers in two places. And `provider.yaml` files are 
used to discover capabilities
+of the providers which are part of the airflow source code.
+
+You can read more about `provider.yaml` and community-managed providers in
+https://airflow.apache.org/docs/apache-airflow-providers/index.html for 
developing custom providers
+and in ``CONTRIBUTING.rst`` for developing community maintained providers.
+
+This is useful if you want to develop providers:
+
+pip install -e . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+You can also skip installing provider packages from PyPI by setting 
INSTALL_PROVIDERS_FROM_SOURCE to "true".
+In this case Airflow will be installed in non-editable mode with all providers 
installed from the sources.
+Additionally `provider.yaml` files will also be copied to providers folders 
which will make the providers
+discoverable by Airflow even if they are not installed from packages in this 
case.
+
+INSTALL_PROVIDERS_FROM_SOURCES="true" pip install . \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+Airflow can be installed with extras to install some additional features (for 
example 'async' or 'doc' or
+to install automatically providers and all dependencies needed by that 
provider:
+
+pip install .[async,google,amazon] \
+  --constraint 
"https://raw.githubusercontent.com/apache/airflow/constraints-main/constraints-3.8.txt";
+
+The list of available extras:
+
+### START EXTRAS HERE
+aiobotocore, airbyte, alibaba, all, all_dbs, amazon, apache.atlas, 
apache.beam, apache.cassandra,
+apache.drill, apache.druid, apache.flink, apache.hdfs, apache.hive, 
apache.impala, apache.kafka,
+apache.kylin, apache.livy, apache.pig, apache.pinot, apache.spark, 
apache.sqoop, apache.webhdfs,
+apprise, arangodb, asana, async, atlas, atlassian.jira, aws, azure, cassandra, 
celery, cgroups,
+cloudant, cncf.kubernetes, common.sql, crypto, dask, daskexecutor, databricks, 
datadog, dbt.cloud,
+deprecated_api, devel, devel_all, devel_ci, devel_hadoop, dingding, discord, 
doc, doc_gen, docker,
+druid, elasticsearch, exasol, facebook, ftp, gcp, gcp_api, github, 
github_enterprise, google,
+google_auth, grpc, hashicorp, hdfs, hive, http, imap, influxdb, jdbc, jenkins, 
kerberos, kubernetes,
+ldap, leveldb, microsoft.azure, microsoft.mssql, microsoft.psrp, 
microsoft.winrm, mongo, mssql,
+mysql, neo4j, odbc, openfaas, openlineage, opsgenie, oracle, otel, pagerduty, 
pandas, papermill,
+password, pinot, plexus, postgres, presto, rabbitmq, redis, s3, salesforce, 
samba, segment,
+sendgrid, sentry, sftp, singularity, slack, smtp, snowflake, spark, sqlite, 
ssh, statsd, tableau,
+tabular, telegram, trino, vertica, virtualenv, webhdfs, winrm, yandex, zendesk
+### END EXTRAS HERE
+
+### For installing Airflow in development environments - see CONTRIBUTING.rst
+
+### COMPILING FRONT-END ASSETS (in case you see "Please make sure to build the 
frontend in static/ directory and then restart the server")
+### Optional : Installing yarn - https://classic.yarnpkg.com/en/docs/install

Review Comment:
   Same comment as above



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