error at installing requirements.txt about build-a-saas-app-with-flask HOT 15 CLOSED

Are you using a Debian based system, if so have you installed the libpq-dev package? If you're using a Mac you will need to brew install postgresql for the header files.

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Python 2.7.9 and pip 7.1.0 on Debian 3.16.0-4-amd64

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Sorry, I edited my comment to ask for different info. Can you sudo apt-get install libpq-dev and then try running pip install?

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E: Unable to locate package libqp-dev

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Oops, libpq-dev.

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hehe ;p

libpq-dev is already the newest version.

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What happens if you just pip install psycopg2? Also can you paste the error it dumped?

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Okay, will try again on fresh install

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`
root@template:~# pip install psycopg2
Collecting psycopg2
Downloading psycopg2-2.6.1.tar.gz (371kB)
100% |████████████████████████████████| 372kB 613kB/s
Building wheels for collected packages: psycopg2
Running setup.py bdist_wheel for psycopg2
Complete output from command /usr/bin/python -c "import setuptools;file='/ tmp/pip-build-FVZKlH/psycopg2/setup.py';exec(compile(open(file).read().repla ce('\r\n', '\n'), file, 'exec'))" bdist_wheel -d /tmp/tmpduKOBYpip-wheel-:
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-2.7
creating build/lib.linux-x86_64-2.7/psycopg2
copying lib/init.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/_range.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/psycopg1.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/_json.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/pool.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/extras.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/tz.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/errorcodes.py -> build/lib.linux-x86_64-2.7/psycopg2
copying lib/extensions.py -> build/lib.linux-x86_64-2.7/psycopg2
creating build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_cancel.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/init.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_module.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_lobject.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_green.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_async.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/testutils.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_bug_gc.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/testconfig.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_bugX000.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_transaction.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_psycopg2_dbapi20.py -> build/lib.linux-x86_64-2.7/psycopg2/ tests
copying tests/test_extras_dictcursor.py -> build/lib.linux-x86_64-2.7/psycopg2 /tests
copying tests/test_dates.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_cursor.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_notify.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_quote.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_connection.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_types_extras.py -> build/lib.linux-x86_64-2.7/psycopg2/test s
copying tests/test_types_basic.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/dbapi20.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_copy.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/test_with.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
copying tests/dbapi20_tpc.py -> build/lib.linux-x86_64-2.7/psycopg2/tests
running build_ext
building 'psycopg2._psycopg' extension
creating build/temp.linux-x86_64-2.7
creating build/temp.linux-x86_64-2.7/psycopg
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototype s -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION=" 2.6.1 (dt dec pq3 ext lo64)" -DPG_VERSION_HEX=0x090403 -DHAVE_LO64=1 -I/usr/incl ude/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/9.4/server -c psycopg/psycopgmodule.c -o build/temp.linux-x86_64-2.7/psycopg/psycopgmodule .o -Wdeclaration-after-statement
unable to execute 'x86_64-linux-gnu-gcc': No such file or directory
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

Failed building wheel for psycopg2
Failed to build psycopg2
Installing collected packages: psycopg2
Running setup.py install for psycopg2
Complete output from command /usr/bin/python -c "import setuptools, tokenize ;file='/tmp/pip-build-FVZKlH/psycopg2/setup.py';exec(compile(getattr(tokeniz e, 'open', open)(file).read().replace('\r\n', '\n'), file, 'exec'))" ins tall --record /tmp/pip-RJiEJB-record/install-record.txt --single-version-externa lly-managed --compile:
running install
running build
running build_py
running build_ext
building 'psycopg2._psycopg' extension
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototy pes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wforma t -Werror=format-security -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION ="2.6.1 (dt dec pq3 ext lo64)" -DPG_VERSION_HEX=0x090403 -DHAVE_LO64=1 -I/usr/in clude/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/9.4/serv er -c psycopg/psycopgmodule.c -o build/temp.linux-x86_64-2.7/psycopg/psycopgmodu le.o -Wdeclaration-after-statement
unable to execute 'x86_64-linux-gnu-gcc': No such file or directory
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

----------------------------------------

Command "/usr/bin/python -c "import setuptools, tokenize;file='/tmp/pip-buil d-FVZKlH/psycopg2/setup.py';exec(compile(getattr(tokenize, 'open', open)(file_ _).read().replace('\r\n', '\n'), __file, 'exec'))" install --record /tmp/pip-R JiEJB-record/install-record.txt --single-version-externally-managed --compile" f ailed with error code 1 in /tmp/pip-build-FVZKlH/psycopg2
root@template:~#
`

Threw an error on psycopg2

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You may want to ping the author of psycopg2 or post an issue in his repo because at this point this is beyond the scope of the saas app.

It hints that you might be missing GCC on your machine. Have you done a apt-get install build-essential?

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It's a fresh vm so hmm don't think I installed build-essentials ;o will try that later

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Gave it a few more tries, ended up needing:

sudo apt-get install python-setuptools python-dev build-essential python-psycopg2

(build-essential) alone was not enough

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Ok thanks. I don't think python-psycopg2 is needed tho. We're installing it through pip.

Also would you mind providing the exact distro of Linux you're using, Debian 3.16.0-4 is probably just the kernel version.

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No longer have the vm, as some ghost process spawned ;S

Debian 8 / Jessie , don't remember much more :(

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Ok thanks, Jessie is enough information.

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