installation

PackagesNotFoundError: The following packages are not available from current channels:

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Try adding the conda-forge channel to your list of channels with this command:conda config –append channels conda-forge. It tells conda to also look on the conda-forge channel when you search for packages. You can then simply install the two packages with conda install slycot control. Channels are basically servers for people to host packages on and the community-driven conda-forge is usually a … Read more

[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

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I am trying to open a program for the first time on Windows XP Pro that uses PostgreSQL 9. I’m getting an error message that says : A problem was encountered while trying to log into or create the production database. Details: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified … Read more

Conda version pip install -r requirements.txt –target ./lib

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To create an environment named py37 with python 3.7, using the channel conda-forge and a list of packages: Flags explained: -y: Yes, do not ask for confirmation. –force-reinstall: Install the package even if it already exists. -q: Quiet, do not display progress bar. -c: Channels, additional channels to search for packages. These are URLs searched in the … Read more

Homebrew install specific version of formula?

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TLDR: brew install [email protected] See answer below for more details. *(I’ve re-edited my answer to give a more thorough workflow for installing/using older software versions with homebrew. Feel free to add a note if you found the old version better.) Let’s start with the simplest case: 1) Check, whether the version is already installed (but … Read more