jpm config file and instructions for "things under ~/.local"

linux_home_local_config.janet

# new instructions here
#
# 0. assuming a janet install with `make clean && PREFIX=$HOME/.local make && PREFIX=$HOME/.local make install`
# 1. git clone https://github.com/janet-lang/jpm
# 2. PREFIX=$HOME/.local janet bootstrap.janet
#
# alternatively, from a clone of the janet repository:
#
# 0. assuming a janet install with `make clean && PREFIX=$HOME/.local make && PREFIX=$HOME/.local make install`
# 1. PREFIX=$HOME/.local make install-jpm-git
#
# XXX: the following doesn't appear necessary any longer
#
# installation instructions
#
# 0. git clone https://github.com/janet-lang/jpm
# 1. save this file in the configs directory of jpm source
# 2. export JANET_JPM_CONFIG=$(pwd)/configs/linux_home_local_config.janet
# 3. janet jpm/cli.janet install --bootstrap-config=$JANET_JPM_CONFIG
#
# note that the last two lines were both necessary to achieve roughly
# the following result for invocations of `jpm show-paths` without having to 
# set JANET_JPM_CONFIG explicitly:
#
# $ jpm show-paths
# binpath:    $HOME/.local/bin
# modpath:    $HOME/.local/lib/janet
# libpath:    $HOME/.local/lib
# headerpath: $HOME/.local/include/janet
# syspath:    $HOME/.local/lib/janet

(def prefix
  (or (when-let [home (os/getenv "HOME")]
        (let [local (string home "/.local")]
          (when (= :directory
                   ((os/stat local) :mode))
            local)))
      "/usr/local"))

(def config 
  {:ar "ar"
   :auto-shebang true
   :binpath (string prefix "/bin")
   :c++ "c++"
   :c++-link "c++"
   :cc "cc"
   :cc-link "cc"
   :cflags @["-std=c99"]
   :cflags-verbose @["-Wall" "-Wextra"]
   :cppflags @["-std=c++11"]
   :curlpath "curl"
   :dynamic-cflags @["-fPIC"]
   :dynamic-lflags @["-shared" "-pthread"]
   :gitpath "git"
   :headerpath (string prefix "/include/janet")
   :is-msvc false
   :janet "janet"
   :janet-cflags @[]
   :janet-lflags @["-lm" "-ldl" "-lrt" "-pthread"]
   :ldflags @[]
   :lflags @[]
   :libpath (string prefix "/lib")
   :manpath (string prefix "/share/man/man1")
   :modext ".so"
   :modpath (string prefix "/lib/janet")
   :nocolor false
   :optimize 2
   :pkglist "https://github.com/janet-lang/pkgs.git"
   :silent false
   :statext ".a"
   :tarpath "tar"
   :test false
   :use-batch-shell false
   :verbose false})