Remove 'spack bootstrap' and associated docs (#15179)

fixes #15145

This commit removes the outdated `spack bootstrap`
command and any reference to it in the documentation
and unit tests.

lib/spack/docs/getting_started.rst

@@ -71,10 +71,6 @@ This automatically adds Spack to your ``PATH`` and allows the ``spack``
 command to be used to execute spack :ref:`commands <shell-support>` and
 :ref:`useful packaging commands <packaging-shell-support>`.
 
-If :ref:`environment-modules <InstallEnvironmentModules>` is
-installed and available, the ``spack`` command can also load and unload
-:ref:`modules <modules>`.
-
 ^^^^^^^^^^^^^^^^^
 Clean Environment
 ^^^^^^^^^^^^^^^^^
@@ -900,9 +896,8 @@ Core Spack Utilities
 ^^^^^^^^^^^^^^^^^^^^
 
 Core Spack uses the following packages, mainly to download and unpack
-source code, and to load generated environment modules: ``curl``,
-``env``, ``git``, ``go``, ``hg``, ``svn``, ``tar``, ``unzip``,
-``patch``, ``environment-modules``.
+source code: ``curl``, ``env``, ``git``, ``go``, ``hg``, ``svn``,
+``tar``, ``unzip``, ``patch``
 
 As long as the user's environment is set up to successfully run these
 programs from outside of Spack, they should work inside of Spack as
@@ -910,10 +905,6 @@ well.  They can generally be activated as in the ``curl`` example above;
 or some systems might already have an appropriate hand-built
 environment module that may be loaded.  Either way works.
 
-If you find that you are missing some of these programs, ``spack`` can
-build some of them for you with ``spack bootstrap``. Currently supported
-programs are ``environment-modules``.
-
 A few notes on specific programs in this list:
 
 """"""""""""""""""""""""""
@@ -941,45 +932,6 @@ other programs will also not work, because they also rely on OpenSSL.
 Once ``curl`` has been installed, you can similarly install the others.
 
 
-.. _InstallEnvironmentModules:
-
-"""""""""""""""""""
-Environment Modules
-"""""""""""""""""""
-
-In order to use Spack's generated module files, you must have
-installed ``environment-modules`` or ``lmod``. The simplest way
-to get the latest version of either of these tools is installing
-it as part of Spack's bootstrap procedure:
-
-.. code-block:: console
-
-   $ spack bootstrap
-
-.. warning::
-   At the moment ``spack bootstrap`` is only able to install ``environment-modules``.
-   Extending its capabilities to prefer ``lmod`` where possible is in the roadmap,
-   and likely to happen before the next release.
-
-Alternatively, on many Linux distributions, you can install a pre-built binary
-from the vendor's repository. On Fedora/RHEL/CentOS, for example, this can be
-done with the command:
-
-.. code-block:: console
-
-   $ yum install environment-modules
-
-Once you have the tool installed and available in your path, you can source
-Spack's setup file:
-
-.. code-block:: console
-
-   $ source share/spack/setup-env.sh
-
-This activates :ref:`shell support <shell-support>` and makes commands like
-``spack load`` available for use.
-
-
 ^^^^^^^^^^^^^^^^^
 Package Utilities
 ^^^^^^^^^^^^^^^^^

lib/spack/docs/module_file_support.rst

@@ -17,22 +17,16 @@ Spack integrates with `Environment Modules
 <http://lmod.readthedocs.io/en/latest/>`_ by
 providing post-install hooks that generate module files and commands to manipulate them.
 
-.. note::
-
-   If your machine does not already have a module system installed,
-   we advise you to use either Environment Modules or LMod. See :ref:`InstallEnvironmentModules`
-   for more details.
-
 .. _shell-support:
 
 ----------------------------
 Using module files via Spack
 ----------------------------
 
-If you have installed a supported module system either manually or through
-``spack bootstrap``, you should be able to run either ``module avail`` or
-``use -l spack`` to see what module files have been installed.  Here is
-sample output of those programs, showing lots of installed packages:
+If you have installed a supported module system you should be able to
+run either ``module avail`` or ``use -l spack`` to see what module
+files have been installed.  Here is sample output of those programs,
+showing lots of installed packages:
 
 .. code-block:: console
 
@@ -93,9 +87,7 @@ Note that in the latter case it is necessary to explicitly set ``SPACK_ROOT``
 before sourcing the setup file (you will get a meaningful error message
 if you don't).
 
-When ``bash`` and ``ksh`` users update their environment with ``setup-env.sh``, it will check for spack-installed environment modules and add the ``module`` command to their environment; This only occurs if the module command is not already available. You can install ``environment-modules`` with ``spack bootstrap`` as described in :ref:`InstallEnvironmentModules`.
-
-Finally, if you want to have Spack's shell support available on the command line at
+If you want to have Spack's shell support available on the command line at
 any login you can put this source line in one of the files that are sourced
 at startup (like ``.profile``, ``.bashrc`` or ``.cshrc``). Be aware though
 that the startup time may be slightly increased because of that.

lib/spack/docs/workflows.rst

@@ -1442,8 +1442,7 @@ The following functionality is prepared:
 
 #. Base image: the example starts from a minimal ubuntu.
 
-#. Pre-install the spack dependencies, including modules from the packages.
-   This avoids needing to build those from scratch via ``spack bootstrap``.
+#. Pre-install the spack dependencies.
    Package installs are followed by a clean-up of the system package index,
    to avoid outdated information and it saves space.