Cache CRAN-like metadata and package files
Metadata and package cache for CRAN-like repositories. This is a utility package to be used by package management tools that want to take advantage of caching.
You can install the released version of pkgcache from CRAN with:
meta_cache_list() lists all packages in the metadata cache. It includes Bioconductor package, and all versions (i.e. both binary and source) of the packages for the current platform and R version.
library(pkgcache)
meta_cache_list()
#> # A tibble: 35,272 x 33
#> package title version depends suggests built imports archs repodir
#> <chr> <chr> <chr> <chr> <chr> <chr> <chr> <chr> <chr>
#> 1 A3 "Acc… 1.0.0 R (>= … randomF… R 3.… <NA> <NA> bin/ma…
#> 2 aaSEA Amin… 1.1.0 R(>= 3… knitr, … R 3.… "DT(>=… <NA> bin/ma…
#> 3 ABACUS "App… 1.0.0 R (>= … rmarkdo… R 3.… ggplot… <NA> bin/ma…
#> 4 abbyyR Acce… 0.5.5 R (>= … testtha… R 3.… httr, … <NA> bin/ma…
#> 5 abc.da… Data… 1.0 R (>= … <NA> R 3.… <NA> <NA> bin/ma…
#> 6 ABC.RAP Arra… 0.9.0 R (>= … knitr, … R 3.… graphi… <NA> bin/ma…
#> 7 abc Tool… 2.1 R (>= … <NA> R 3.… <NA> <NA> bin/ma…
#> 8 abcADM Fit … 1.0 <NA> <NA> R 3.… Rcpp (… abcA… bin/ma…
#> 9 ABCana… Comp… 1.2.1 R (>= … <NA> R 3.… plotrix <NA> bin/ma…
#> 10 abcdeF… "ABC… 0.4 Rglpk,… LIM,syb… R 3.… <NA> <NA> bin/ma…
#> # … with 35,262 more rows, and 24 more variables: platform <chr>,
#> # rversion <chr>, needscompilation <chr>, priority <chr>, ref <chr>,
#> # type <chr>, direct <lgl>, status <chr>, target <chr>, mirror <chr>,
#> # sources <list>, filesize <int>, sha256 <chr>, sysreqs <chr>,
#> # published <dttm>, deps <list>, license <chr>, md5sum <chr>,
#> # linkingto <chr>, enhances <chr>, license_restricts_use <chr>,
#> # os_type <chr>, license_is_foss <chr>, path <chr>meta_cache_deps() and meta_cache_revdeps() can be used to look up dependencies and reverse dependencies.
The metadata is updated automatically if it is older than seven days, and it can also be updated manually with meta_cache_update().
See the cranlike_metadata_cache R6 class for a lower level API, and more control.
Package management tools may use the pkg_cache_* functions and in particular the package_cache class, to make use of local caching of package files.
The pkg_cache_* API is high level, and uses a user level cache:
pkg_cache_summary()
#> $cachepath
#> [1] "/Users/gaborcsardi/Library/Caches/R-pkg/pkg"
#>
#> $files
#> [1] 677
#>
#> $size
#> [1] 608180353pkg_cache_list()
#> # A tibble: 677 x 10
#> fullpath path package url etag sha256 built version platform
#> <chr> <chr> <chr> <chr> <chr> <chr> <int> <chr> <chr>
#> 1 /Users/… src/… crayon <NA> <NA> 84be6… 0 <NA> <NA>
#> 2 /Users/… bin/… proces… http… "\"3… ce84a… NA 3.4.1 macos
#> 3 /Users/… bin/… R6 http… "\"d… 4cfe3… NA 2.4.0 macos
#> 4 /Users/… bin/… ps http… "\"3… 63add… NA 1.3.0 macos
#> 5 /Users/… src/… callr <NA> <NA> df85a… 0 <NA> <NA>
#> 6 /Users/… bin/… callr http… "\"5… 1a5e3… NA 3.3.1 macos
#> 7 /Users/… bin/… assert… http… "\"d… 103f9… NA 0.2.1 macos
#> 8 /Users/… bin/… backpo… http… "\"d… 344bb… NA 1.1.4 macos
#> 9 /Users/… bin/… crayon http… "\"b… 2ac4f… NA 1.3.4 macos
#> 10 /Users/… bin/… desc http… "\"4… 196ce… NA 1.2.0 macos
#> # … with 667 more rows, and 1 more variable: vignettes <chr>pkg_cache_find(package = "dplyr")
#> # A tibble: 4 x 10
#> fullpath path package url etag sha256 built version platform
#> <chr> <chr> <chr> <chr> <chr> <chr> <int> <chr> <chr>
#> 1 /Users/… bin/… dplyr http… "\"6… e2594… NA 0.8.3 macos
#> 2 /Users/… src/… dplyr <NA> <NA> 134b1… 0 <NA> <NA>
#> 3 /Users/… src/… dplyr <NA> <NA> b357f… 0 <NA> <NA>
#> 4 /Users/… src/… dplyr <NA> <NA> 81767… 0 <NA> <NA>
#> # … with 1 more variable: vignettes <chr>pkg_cache_add_file() can be used to add a file, pkg_cache_delete_files() to remove files, pkg_cache_get_files() to copy files out of the cache.
The package_cache class provides a finer API.
Both the metadata cache and the package cache support Bioconductor by default, automatically. See the BioC_mirror option and the R_BIOC_MIRROR and R_BIOC_VERSION environment variables below to configure pkgcache’s Bioconductor support.
BioC_mirror option can be used to select a Bioconductor mirror. This takes priority over the R_BIOC_MIRROR environment variable.pkgcache_timeout is the HTTP timeout for all downloads. It is in seconds, and the limit for downloading the whole file. Defaults to 3600, one hour. It corresponds to the TIMEOUT libcurl option.pkgcache_connecttimeout is the HTTP timeout for the connection phase. It is in seconds and defaults to 30 seconds. It corresponds to the CONNECTTIMEOUT libcurl option.pkgcache_low_speed_limit and pkgcache_low_speed_time are used for a more sensible HTTP timeout. If the download speed is less than pkgcache_low_speed_limit bytes per second for at least pkgcache_low_speed_time seconds, the download errors. They correspond to the LOW_SPEED_LIMIT and LOW_SPEED_TIME curl options.R_BIOC_VERSION environment variable can be used to override the default Bioconductor version detection and force a given version. E.g. this can be used to force the development version of Bioconductor.R_BIOC_MIRROR environment variable can be used to select a Bioconductor mirror. The BioC_mirror option takes priority over this, if set.PKGCACHE_TIMEOUT is the HTTP timeout for all downloads. It is in seconds, and the limit for downloading the whole file. Defaults to 3600, one hour. It corresponds to the TIMEOUT libcurl option. The pkgcache_timeout option has priority over this, if set.PKGCACHE_CONNECTTIMEOUT is the HTTP timeout for the connection phase. It is in seconds and defaults to 30 seconds. It corresponds to the CONNECTTIMEOUT libcurl option. The pkgcache_connecttimeout option takes precedence over this, if set.PKGCACHE_LOW_SPEED_LIMIT and PKGCACHE_LOW_SPEED_TIME are used for a more sensible HTTP timeout. If the download speed is less than PKGCACHE_LOW_SPEED_LIMIT bytes per second for at least PKGCACHE_LOW_SPEED_TIME seconds, the download errors. They correspond to the LOW_SPEED_LIMIT and LOW_SPEED_TIME curl options. The pkgcache_low_speed_time and pkgcache_low_speed_limit options have priority over these environment variables, if they are set.Please note that the ‘pkgcache’ project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.
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