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Note: Sometimes, you'll see multiple installations of the same package installed on the same OS, with the same compiler (e.g. relion@3.0_beta is listed 3 times in the above output). What this means is that this packages was installed for the same OS/compiler, but with different configuration options. This will be explained in the next section. |
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Before loading any Spack packages, it is helpful to know that Spack stores a list of loaded packages in the variable |
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spack load -r python@3.7.0^gcc@6.3.0 |
- The -r instructs Spack to load all modules that python@3.7.0 depends on. This is typically done automatically, but not currently done for perl, python, or R (this is because Spack does not build these packages with RPATH support--this may change in the future).
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Executing this command doesn't produce any output, but just to illustrate that python@3.4.3 is indeed loaded illustrate that python@3.7.0 is indeed loaded (as well as its dependencies), execute the following command:
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echo $LOADEDMODULES | sed "s/:/\n/g" | sort |
Here, we can see that python@3.47.3 0is indeed loaded, as are all packages that it depends on.
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