pkg-dependencies.md
In pkgdepends: Package Dependency Resolution and Downloads

new_pkg_deps

Code
  deps
Output
  <pkg_dependencies>
  + refs:
    - pkg3
  (use `$resolve()` to resolve dependencies)
  (use `$solve()` to solve dependencies)

Code
  deps$get_refs()
Output
  [1] "pkg3"

Code
  sort(deps$get_config()$list())
Output
   [1] "build_vignettes"           "cache_dir"                
   [3] "cran_mirror"               "dependencies"             
   [5] "goal"                      "include_linkingto"        
   [7] "library"                   "metadata_cache_dir"       
   [9] "metadata_update_after"     "package_cache_dir"        
  [11] "platforms"                 "r_versions"               
  [13] "sysreqs"                   "sysreqs_db_update"        
  [15] "sysreqs_db_update_timeout" "sysreqs_dry_run"          
  [17] "sysreqs_lookup_system"     "sysreqs_platform"         
  [19] "sysreqs_rspm_repo_id"      "sysreqs_rspm_url"         
  [21] "sysreqs_sudo"              "sysreqs_update"           
  [23] "sysreqs_verbose"           "use_bioconductor"         
  [25] "windows_archs"

Code
  deps
Output
  <pkg_dependencies>
  + refs:
    - pkg3
  + has resolution (+2 dependencies)
  (use `$get_resolution()` to see resolution results)
  (use `$solve()` to solve dependencies)

Code
  deps
Output
  <pkg_dependencies>
  + refs:
    - pkg3
  + has resolution (+2 dependencies)
  + has solution
  (use `$get_resolution()` to see resolution results)
  (use `$show_solution()` to see the dependencies
  (use `$get_solution()` to see the full solution results)
  (use `$draw()` to draw the dependency tree)

Code
  deps$draw()
Output
  pkg3 1.0.0 [new][bld][dl] (<size>)
  \-pkg2 1.0.0 [new][bld][dl] (<size>)
    \-pkg1 1.0.0 [new][bld][dl] (<size>)

  Key:  [new] new | [dl] download | [bld] build

Code
  deps$get_solution()
Output
  <pkg_solution>
  + result: OK
  + refs:
    - pkg3
  + constraints (5):
    - select pkg3 exactly once
    - select pkg1 at most once
    - select pkg2 at most once
    - pkg2 depends on pkg1: version pkg1 1.0.0
    - pkg3 depends on pkg2: version pkg2 1.0.0
  + solution:
    - pkg1
    - pkg2
    - pkg3

async

Code
  synchronize(deps$async_resolve()$then(function() "done"))
Output
  [1] "done"

Code
  deps$get_resolution()[, c("ref", "type", "directpkg", "package", "error")]
Output
  # A data frame: 3 x 5
    ref   type     directpkg package error     
    <chr> <chr>    <lgl>     <chr>   <list>    
  1 pkg1  standard FALSE     pkg1    <list [0]>
  2 pkg2  standard FALSE     pkg2    <list [0]>
  3 pkg3  standard TRUE      pkg3    <list [0]>

solve policy

Code
  deps
Output
  <pkg_dependencies>
  + refs:
    - pkg3
  + has resolution (+2 dependencies)
  + has solution
  (use `$get_resolution()` to see resolution results)
  (use `$show_solution()` to see the dependencies
  (use `$get_solution()` to see the full solution results)
  (use `$draw()` to draw the dependency tree)

errors

Code
  deps$stop_for_solution_error()
Condition
  Error:
  ! Could not solve package dependencies:
  * needsfuturama: Can't install dependency futurama
  * futurama: Needs R >= 3000.0