install.md
In renv: Project Environments

renv warns when installing an already-loaded package

Code
  install("bread@0.1.0")
Output
  The following package(s) will be installed:
  - bread [0.1.0]
  These packages will be installed into "<tempdir>/<renv-library>".

  # Installing packages ---
  - Installing bread 0.1.0 ...                    OK [copied from cache in XXs]
  Successfully installed 1 package in XXXX seconds.

  The following loaded package(s) have been updated:
  - bread
  Restart your R session to use the new versions.

install has user-friendly output

Code
  install()
Output
  # Downloading packages ---
  - Downloading breakfast 1.0.0 from CRAN ...     OK [XXXX bytes in XXs]
  - Downloading oatmeal 1.0.0 from CRAN ...       OK [XXXX bytes in XXs]
  - Downloading toast 1.0.0 from CRAN ...         OK [XXXX bytes in XXs]
  - Downloading bread 1.0.0 from CRAN ...         OK [XXXX bytes in XXs]
  Successfully downloaded 4 packages in XXXX seconds.

  The following package(s) will be installed:
  - bread     [1.0.0]
  - breakfast [1.0.0]
  - oatmeal   [1.0.0]
  - toast     [1.0.0]
  These packages will be installed into "<tempdir>/<renv-library>".

  # Installing packages ---
  - Installing oatmeal 1.0.0 ...                  OK [built from source and cached in XXs]
  - Installing bread 1.0.0 ...                    OK [built from source and cached in XXs]
  - Installing toast 1.0.0 ...                    OK [built from source and cached in XXs]
  - Installing breakfast 1.0.0 ...                OK [built from source and cached in XXs]
  Successfully installed 4 packages in XXXX seconds.

Code
  install()
Output
  The following package(s) will be installed:
  - bread     [1.0.0]
  - breakfast [1.0.0]
  - oatmeal   [1.0.0]
  - toast     [1.0.0]
  These packages will be installed into "<tempdir>/<renv-library>".

  # Installing packages ---
  - Installing oatmeal 1.0.0 ...                  OK [copied from cache in XXs]
  - Installing bread 1.0.0 ...                    OK [copied from cache in XXs]
  - Installing toast 1.0.0 ...                    OK [copied from cache in XXs]
  - Installing breakfast 1.0.0 ...                OK [copied from cache in XXs]
  Successfully installed 4 packages in XXXX seconds.