Conda Usage Example
Conda is an open source package management system and environment management system that runs on Windows, macOS and Linux. Conda quickly installs, runs and updates packages and their dependencies. Conda easily creates, saves, loads and switches between environments on your local computer. It was created for Python programs, but it can package and distribute software for any language.
Creating and Using Ecosystem
Flight Env provides quick setup methods to create a conda software ecosystem.
To install and use conda:
- Activate the flight system.
- Create the conda installation for the user:
[flight@chead1 ~]$ flight env create conda
Creating environment conda@default
> ✅ Verifying prerequisites
> ✅ Fetching prerequisite (miniconda)
> ✅ Creating environment (conda@default)
Environment conda@default has been created
- Activate the conda ecosystem:
[flight@chead1 ~]$ flight env activate conda
(base) <conda> [flight@chead1 ~]$
- Check that conda can be run:
(base) <conda> [flight@chead1 ~]$ conda --version conda 4.7.10
Installing and Running Perl
An example workflow using perl is demonstrated below.
- View available versions:
(base) <conda> [flight@chead1 ~]$ conda search perl
Loading channels: done
# Name Version Build Channel
perl 5.26.0 hae598fd_0 pkgs/main
perl 5.26.2 h14c3975_0 pkgs/main
-
Install specific version:
(base) <conda> [flight@chead1 ~]$ conda install perl=5.26.2 Collecting package metadata (current_repodata.json): done Solving environment: done ## Package Plan ## environment location: /home/flight/.local/share/flight/env/conda+default added / updated specs: - perl=5.26.2 The following packages will be downloaded: package | build ---------------------------|----------------- ca-certificates-2019.5.15 | 1 134 KB certifi-2019.6.16 | py37_1 156 KB conda-4.7.11 | py37_0 3.0 MB perl-5.26.2 | h14c3975_0 10.5 MB ------------------------------------------------------------ Total: 13.7 MB The following NEW packages will be INSTALLED: perl pkgs/main/linux-64::perl-5.26.2-h14c3975_0 The following packages will be UPDATED: ca-certificates 2019.5.15-0 --> 2019.5.15-1 certifi 2019.6.16-py37_0 --> 2019.6.16-py37_1 conda 4.7.10-py37_0 --> 4.7.11-py37_0 Proceed ([y]/n)? y Downloading and Extracting Packages conda-4.7.11 | 3.0 MB | ############################################################################################ | 100% certifi-2019.6.16 | 156 KB | ############################################################################################ | 100% perl-5.26.2 | 10.5 MB | ############################################################################################ | 100% ca-certificates-2019 | 134 KB | ############################################################################################ | 100% Preparing transaction: done Verifying transaction: done Executing transaction: done -
Check installation location:
(base) <conda> [flight@chead1 ~]$ which perl ~/.local/share/flight/env/conda+default/bin/perl -
Install perl library (this may prompt for initial
cpanconfiguration, once configuration is complete then the library will be installed):
(base) <conda> [flight@chead1 ~]$ cpan File::Slurp
Loading internal null logger. Install Log::Log4perl for logging messages
Reading '/home/flight/.cpan/Metadata'
Database was generated on Mon, 09 Sep 2019 15:17:03 GMT
Running install for module 'File::Slurp'
<-- snip -->
- Check installation worked:
(base) <conda> [flight@chead1 ~]$ cpan File::Slurp Loading internal null logger. Install Log::Log4perl for logging messages Reading '/home/flight/.cpan/Metadata' Database was generated on Mon, 09 Sep 2019 15:17:03 GMT File::Slurp is up to date (9999.27).