pg config executable not found

Question

I am having trouble installing psycopg2  I get the following error when I try to pip install psycopg2   Error  pg config executable not found   Please add the directory containing pg config to the PATH  or specify the full executable path with the option         python setup py build ext --pg-config  path to pg config build        or with the pg config option in  setup cfg    ---------------------------------------- Command python setup py egg info failed with error code 1 in  tmp pip-build psycopg2   But the problem is pg config is actually in my PATH  it runs without any problem     which pg config  usr pgsql-9 1 bin pg config   I tried adding the pg config path to the setup cfg file and building it using the source files I downloaded from their website  http   initd org psycopg   and I get the following error message   Error  Unable to find  pg config  file in   usr pgsql-9 1 bin     But it is actually THERE     I am baffled by these errors  Can anyone help please   By the way  I sudo all the commands  Also I am on RHEL 5 5

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This was partly suggested before  adding it here for clarity  From the documentation at https   www psycopg org docs install html  they suggest running    pip install psycopg2-binary That solved the issue for me

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for CentOS RedHat make sure that  etc alternatives pgsql-pg config is a non-broken symlink

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Try to add it to PATH   PATH  PATH  usr pgsql-9 1 bin    pip install psycopg2

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Here  for OS X completeness  if you install PostgreSQL from MacPorts  pg config will be in  opt local lib postgresql94 bin pg config    When you installed MacPorts  it already added  opt local bin to your PATH    So  this will fix the problem     sudo ln -s  opt local lib postgresql94 bin pg config  opt local bin pg config   Now pip install psycopg2 will be able to run pg config without issues

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On Mac OS X and If you are using Postgres App  http   postgresapp com     export PATH  PATH  Applications Postgres app Contents Versions latest bin   No need to specify version of Postgres in this command  It will be always pointed to latest   and do   pip install psycopg2   P S  If Changes doesn t reflect you may need to restart the Terminal Command prompt  Source

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You should add python requirements used in Postgres on Ubuntu  Run   sudo apt-get install libpq-dev python-dev

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Installing python-psycopg2 solved it for me on Arch Linux   pacman -S python-psycopg2

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Ali s solution worked for me but I was having trouble finding the bin folder location  A quick way to find the path on Mac OS X is to open psql  there s a quick link in the top menu bar   This will open a separate terminal window and on the second line the path of your Postgres installation will appear like so   My-MacBook-Pro   Me   Applications Postgres93 app Contents MacOS bin psql   exit    Your pg config file is in that bin folder  Therefore  before installing psycopg2 set the path of the pg config file   PATH  PATH  Applications Postgres93 app Contents MacOS bin    or for newer version   PATH  PATH  Applications Postgres app Contents Versions 9 3 bin   Then install psycopg2

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On Windows  You may want to install the Windows port of Psycopg  which is recommended in psycopg s documentation

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sudo apt-get install libpq-dev works for me on Ubuntu 15 4

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sudo yum install postgresql-devel    centos6X   pip install psycopg2  2 5 2

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Just solved the problem in Cent OS 7 by   export PATH  PATH  usr pgsql-9 5 bin   make sure your PostgreSql version matches the right version above

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If you are using mac then make sure you have installed Postgresql in your machine

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Just to sum up  I also faced exactly same problem  After reading a lot of stackoverflow posts and online blogs  the final solution which worked for me is this   1  PostgreSQL development or any stable version  should be installed before installing psycopg2   2  The pg config file  this file normally resides in the bin folder of the PostgreSQL installation folder  PATH had to be explicitly setup before installing psycopg2  In my case  the installation PATH for PostgreSQL is    opt local lib postgresql91    so in order to explicitly set the PATH of pg config file  I entered following command in my terminal   PATH  PATH  opt local lib postgresql91 bin    This command ensures that when you try to pip install psycopg2  it would find the PATH to pg config automatically this time   I have also posted a full error with trace and its solution on my blog which you may want to refer  Its for Mac OS X but the pg config PATH problem is generic and applicable to Linux also

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For anyone experiencing this issue working on a Django application and deploying to AWS  the method described in this tutorial worked for me  https   realpython com deploying-a-django-app-and-postgresql-to-aws-elastic-beanstalk   Here is the author s explanation for when you get the following error   Error  pg config executable not found       The problem is that we tried to install psycopy2  the Postgres Python bindings   but we need the Postgres client drivers to be installed as well  Since they are not installed by default  we need to install them first        eb will read custom  config files from a folder called     ebextensions    at the root level of your project  These  config files allow you to install packages  run arbitrary commands and or set environment variables  Files in the     ebextensions    directory should conform to either JSON or YAML syntax and are executed in alphabetical order       The first thing to do is install some packages so that our pip install command will complete successfully  To do this  let   s create a file called  ebextensions 01 packages config    packages    yum      git         postgresql93-devel         libjpeg-turbo-devel          EC2 instances run Amazon Linux  which is a Redhat flavor  so we can use yum to install the packages that we need  For now  we are just going to install three packages - git  the Postgres client  and libjpeg for Pillow

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On Mac OS X  I solved it using the homebrew package manager  brew install postgresql

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Have you installed python-dev  If you already have  try also installing libpq-dev  sudo apt-get install libpq-dev python-dev   From the article  How to install psycopg2 under virtualenv

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I am pretty sure you ve experienced the same  problem  i did  therefore I ll offer you the extremely easy solution     In your case  the actual path that you need to add to  PATH  or as a command param  is    usr pgsql-9 1 bin pg config   not   usr pgsql-9 1 bin   E g  if you run the python setup py script afterwards  you would run it like this   python setup py build ext --pg-config  usr pgsql-9 1 bin pg config build   Probably too late  but still the easiest solution   LATER EDIT   Under further test I found out that if you initially add the path to pg config in the form    usr pgsql-9 1 bin    without  pg config after       bin  and run the pip install command it will work   However  if you then decide to follow the indication to run python setup py  you will have to specify the path with  pg config after       bin  i e   python setup py build ext --pg-config  usr pgsql-9 1 bin pg config build

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a simple solution can be   pip install psycopg2  2 7 5

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For those running OS X  this solution worked for me   1  Install Postgres app   http   www postgresql org download macosx   2  Then open the Terminal and run this command  replacing where it says   version   with the Postgres version number   export PATH  PATH  Applications Postgres app Contents Versions   version   bin  e g   export PATH  PATH  Applications Postgres app Contents Versions 9 4 bin

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apt-get build-dep python-psycopg2

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I got fixed this by running the following command   env LDFLAGS  -I usr local opt openssl include -L usr local opt openssl lib  pip install psycopg2   Reference   https   stackoverflow com a 39800677 4270698

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if you have recently updated python or changed default python  let s say from 3 6 to 3 8   The following code sudo apt-get install python-dev   OR    sudo apt-get install python3-dev  will be installing working for the previous python version  so if you want this command to work for the recently updated changed python version try mentioning that specific version like python3 8 in command like sudo apt-get install python3 8-dev    try above with following pip install wheel export PATH  path to compiled postgresql bin  quot  PATH quot  sudo apt-get install libpq-dev sudo apt-get install python3 x-dev      Change x with your version  eg python3 8   pip install psycopg2-binary pip install psycopg2

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This is how I managed to install psycopg2    wget http   initd org psycopg tarballs PSYCOPG-2-5 psycopg2-2 5 3 tar gz   tar -xzf psycopg2-2 5 3 tar gz   cd psycopg2-2 5 3   pip install

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UPDATE  etc yum repos d CentOS-Base repo   base  and  updates  sections ADD exclude postgresql   curl -O http   yum postgresql org 9 1 redhat rhel-6-i386 pgdg-centos91-9 1-4 noarch rpmr   rpm -ivh pgdg-centos91-9 1-4 noarch rpm  yum install postgresql   yum install postgresql-devel  PATH  PATH  usr pgsql-9 1 bin   pip install psycopg2

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pg config is in postgresql-devel  libpq-dev in Debian Ubuntu  libpq-devel on Centos Cygwin Babun

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You have to install libpq-dev postgresql-libs  which is the header files and static library for compiling C programs to link with the libpq library in order to communicate with a PostgreSQL database backend  On Arch this will run    sudo pacman -S postgresql-libs  On Debian and Ubuntu    sudo apt-get install libpq-dev  On Mac OS X    brew install postgresql  On Red Hat CentOS Fedora    sudo yum install postgresql-devel

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Also on OSX  Installed Postgress app from http   postgresapp com  but had the same issue   I found pg config in that app s contents and added the dir to  PATH   It was at  Applications Postgres app Contents Versions latest bin  So this worked  export PATH   Applications Postgres app Contents Versions latest bin  PATH

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I found that this page provided the best instructions for installing PostgreSQL on my mac and that the pip install command worked perfectly afterwards   https   www codefellows org blog three-battle-tested-ways-to-install-postgresql

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If you re trying to add a psycopg2 dependency in your virtual environment that will allow your python project to connect to your docker or kubernetes pod that s running postgresql separately  on your Mac and are not really interested in installing postgresql on your Mac just so that you can get pg config  here s what you do instead  Install psycopg2 binary as suggested in the error output from the pipenv install and everything will work out just fine

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You can install pre-compiled binaries on any platform with pip or conda  python -m pip install psycopg2-binary  or conda install psycopg2  Please be advised that the psycopg2-binary pypi page recommends building from source in production   The binary package is a practical choice for development and testing but in production it is advised to use the package built from sources  To use the package built from sources  use python -m pip install psycopg2  That process will require several dependencies  documentation   emphasis mine     A C compiler  The Python header files  They are usually installed in a package such as python-dev  A message such as error  Python h  No such file or directory is an indication that the Python headers are missing  The libpq header files  They are usually installed in a package such as libpq-dev  If you get an error  libpq-fe h  No such file or directory you are missing them  The pg config program  it is usually installed by the libpq-dev package but sometimes it is not in a PATH directory  Having it in the PATH greatly streamlines the installation  so try running pg config --version  if it returns an error or an unexpected version number then locate the directory containing the pg config shipped with the right libpq version  usually  usr lib postgresql X Y bin   and add it to the PATH     export PATH  usr lib postgresql X Y bin   PATH  You only need pg config to compile psycopg2  not for its regular usage    Once everything is in place it   s just a matter of running the standard    pip install psycopg2  or  from the directory containing the source code    python setup py build   python setup py install

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To those on macOS Catalina using the zsh shell who have also installed the postgres app   Open your    zshrc file  and add the following line   export PATH   Applications Postgres app Contents Versions latest bin  PATH      Then close all your terminals  reopen them  and you ll have resolved your problem     If you don t want to close your terminals  simply enter source    zshrc in whatever terminal you d like to keep working on

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You can use the binary instead  I ran into the issue in dockerizing the application when Django tried to install it as part of its dependencies  to resolve that  I used this setup for requirements txt where the binary is installed first and then django does not try to install it again  psycopg2-binary django gunicorn

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For MAC users - After adding the postgresql package through HomeBrew  you might have to add the openssl path variable - export LIBRARY PATH  LIBRARY PATH  usr local opt openssl lib  Then you can again pip install the psycopg2 package which should work

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I m going to leave this here for the next unfortunate soul who can t get around this problem despite all the provided solutions  Simply use sudo pip3 install psycopg2-binary

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Simply run the following  sudo apt install libpq-dev  Fixed the issue for me

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On MacOS  the simplest solution will be to symlink the correct binary  that is under the Postgres package   sudo ln -s  Applications Postgres app Contents Versions latest bin pg config  usr local bin pg config   This is fairly harmless  and all the applications will be able to use it system wide  if required

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I recommend that you try to use Postgres app   http   postgresapp com  This way you can easily turn Postgres on and off on your Mac  Once you do  add the path to Postgres to your  profile file by appending the following   PATH   Applications Postgres app Contents Versions latest bin  PATH   Only after you added Postgres to your path you can try to install psycopg2 either within a virtual environment  using pip  or into your global site-packages

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A quick understanding of how pip works pip -  python2 and pip3 -  python3  so if you re looking to fix this on python 3 you can simply sudo pip3 install psycopg2 this should work  probably

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For mac users  extend your path variable to include PostgreSQL like this export PATH  PATH  Library PostgreSQL 12 bin

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This is what worked for me on CentOS  first install   sudo yum install postgresql postgresql-devel python-devel   On Ubuntu just use the equivilent apt-get packages   sudo apt-get install postgresql postgresql-dev python-dev   And now include the path to your postgresql binary dir with you pip install  this should work for either Debain or RHEL based Linux   sudo PATH  PATH  usr pgsql-9 3 bin  pip install psycopg2   Make sure to include the correct path  Thats all

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On Gentoo You have to execute the following    Install postgresql client libraries sudo emerge postgresql-base

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You need to upgrade your pip before installing psycopg2  Use this command  pip install --upgrade pip

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On MAC Mojave  if you have installed it using brew  then do  brew info  lt your postgres gt   It will show you all environment variables that you should set  simply copy-paste those commands  restart your shell and thats it

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There is a lack of answers for windows users  Here is how I solved this issue   First add the PostgreSQL bin folder into the path variable like this  set PATH  PATH  C  Program Files PostgreSQL 11 bin   Substitute  11  with your version of Postgres  next run  pip install pyscopg2   this at least got me to a compiling error    Update  it looks to be an issue with the psycopg2 library and it   s dependencies not playing nice with python 3 8  https   github com psycopg psycopg2 issues 990

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On Linux Mint sudo apt-get install libpq-dev worked for me

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run the following command to resolve pg config executable not found - sudo apt-get install --reinstall libpq-dev

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On alpine  the library containing pg config is postgresql-dev  To install  run   apk add postgresql-dev

[python] pg_config executable not found

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