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 ---
  [32m✔[0m bread 0.1.0                              [copied from cache]
  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
  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>".

  # Downloading packages ---
  [32m✔[0m bread 1.0.0                             
  [32m✔[0m breakfast 1.0.0                         
  [32m✔[0m oatmeal 1.0.0                           
  [32m✔[0m toast 1.0.0                             
  Successfully downloaded 4 packages in XXXX seconds.

  # Installing packages ---
  [32m✔[0m bread 1.0.0                              [built from source]
  [32m✔[0m breakfast 1.0.0                          [built from source]
  [32m✔[0m oatmeal 1.0.0                            [built from source]
  [32m✔[0m toast 1.0.0                              [built from source]
  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 ---
  [32m✔[0m bread 1.0.0                              [copied from cache]
  [32m✔[0m breakfast 1.0.0                          [copied from cache]
  [32m✔[0m oatmeal 1.0.0                            [copied from cache]
  [32m✔[0m toast 1.0.0                              [copied from cache]
  Successfully installed 4 packages in XXXX seconds.

install() report doesn't crash when a package has no version

Code
  install()
Output
  The following package(s) will be installed:
  - missing [*]
  These packages will be installed into "<wd>/renv/library/<platform-prefix>".

  # Downloading packages ---
  [31m✖[0m missing                                 
  # Installing packages ---

  The following package(s) were not installed successfully:
  - [missing]: package 'missing' is not available
  You may need to manually download and install these packages.

Condition
  Error in `install()`:
  ! package installation failed
  - missing: package 'missing' is not available

install from local sources shows progress

Code
  install(path)
Output
  The following package(s) will be installed:
  - bread [1.0.0]
  These packages will be installed into "<wd>/renv/library/<platform-prefix>".

  # Downloading packages ---
  [32m✔[0m bread 1.0.0                             
  Successfully downloaded 1 package in XXXX seconds.

  # Installing packages ---
  [32m✔[0m bread 1.0.0                              [built from source]
  Successfully installed 1 package in XXXX seconds.