Reduce build time of package

[sdhutchins]

The travis-ci build job failed.

Could be due to:

• Too many dependencies for the app.

[sdhutchins]

Current build configuration

{
  "r": [
    "oldrel",
    "release",
    "devel"
  ],
  "os": "linux",
  "dist": "trusty",
  "sudo": false,
  "cache": "packages",
  "group": "stable",
  ".result": "configured",
  "language": "r",
  "r_packages": [
    "tidyverse",
    "vegan"
  ],
  "after_success": [
    "R CMD INSTALL $PKG_TARBALL",
    "Rscript -e 'lintr::lint_package()'"
  ],
  "bioc_packages": [
    "BiocInstaller"
  ],
  "r_github_packages": [
    "joey711/phyloseq",
    "grunwaldlab/metacoder",
    "ropensci/taxa",
    "MadsAlbertsen/ampvis2"
  ],
  "warnings_are_errors": false
}

[sdhutchins]

Currently, the build is breaking...I'll look into fixing that today, @grabear

7.25s$ Rscript -e 'deps <- devtools::dev_package_deps(dependencies = NA);devtools::install_deps(dependencies = TRUE);if (!all(deps$package %in% installed.packages())) { message("missing: ", paste(setdiff(deps$package, installed.packages()), collapse=", ")); q(status = 1, save = "no")}'
Error: Missing commas separating Remotes: 'github::joey711/phyloseq
    ggthemes'
Execution halted
The command "Rscript -e 'deps <- devtools::dev_package_deps(dependencies = NA);devtools::install_deps(dependencies = TRUE);if (!all(deps$package %in% installed.packages())) { message("missing: ", paste(setdiff(deps$package, installed.packages()), collapse=", ")); q(status = 1, save = "no")}'" failed and exited with 1 during .

[sdhutchins]

A great article: http://jtleek.com/protocols/travis_bioc_devel/

[sdhutchins]

@grabear Anything against bumping R to version 3.5.0?

Installing package into ‘/home/travis/R/Library’
(as ‘lib’ is unspecified)
ERROR: this R is version 3.4.4, package 'microbiome' requires R >=  3.5.0

[sdhutchins]

The build is passing for R 3.5.1 and the development release of R. Just not the old release (which we can remove from .travis.yml).

[grabear]

3.5 is fine

[grabear]

microbiome/microbiome#101

Per this PR I'm going to change the R version to >= 3.3.0

[sdhutchins]

We need to add oldrel back to travis.yml