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We will now create a new CONDA environment to install the tools needed for mapping. The reason we need to create a new a new environments is because the QC and mapping tools have no compatible dependencies.

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Next, we need to install few tools for today’s exercises. Now let’s go the https://anaconda.org and search for the following tools and instructions on how to install them:

samtools, sniffles, minimap2

For example, search for samtools:

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Alternative approach to create a conda env and install tools (we are not doing this - this just for your information) - installing all tools at once (slower option!)

Prepare the following environment.yml file:

name: ONTvariants_mapping
channels:
  - conda-forge
  - defaults
  - bioconda
dependencies:
  - samtools=1.20
  - minimap=2-2.28

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As you have seen, we can search at anaconda.org for other tools that we might be interested to use.

Remember, if you run into compatibility issues or errors, you can always create a new conda environment for the tool of interest. NOTE: you can switch between conda environements as follows:

conda activate ONTvariants_QC
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conda deactivate
conda activate ONTvariants_mapping
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