1. /usr/local/bin may not even exist, so try to create it if it doesn…

…'t exist; 2. use `chown` in the installation script if /usr/local/bin is not writable

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: tinytex
 Type: Package
 Title: Helper Functions to Install and Maintain TeX Live, and Compile LaTeX Documents
-Version: 0.41.2
+Version: 0.41.3
 Authors@R: c(
   person("Yihui", "Xie", role = c("aut", "cre", "cph"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666")),
   person(family = "RStudio, PBC", role = "cph"),

R/install.R

@@ -204,17 +204,21 @@ win_app_dir = function(..., error = TRUE) {
 
 # check if /usr/local/bin on macOS is writable
 check_local_bin = function() {
-  if (os_index != 3 || is_writable('/usr/local/bin')) return()
-  chown_cmd = 'chown -R `whoami`:admin /usr/local/bin'
+  if (os_index != 3 || is_writable(p <- '/usr/local/bin')) return()
   message(
-    'The directory /usr/local/bin is not writable. I recommend that you ',
-    'make it writable. See https://github.com/rstudio/tinytex/issues/24 for more info.'
+    'The directory ', p, ' is not writable. I recommend that you make it writable. ',
+    'See https://github.com/rstudio/tinytex/issues/24 for more info.'
   )
+  if (!dir_exists(p)) osascript(paste('mkdir -p', p))
+  osascript(paste('chown -R `whoami`:admin', p))
+}
+
+osascript = function(cmd) {
   if (system(sprintf(
-    "/usr/bin/osascript -e 'do shell script \"%s\" with administrator privileges'", chown_cmd
+    "/usr/bin/osascript -e 'do shell script \"%s\" with administrator privileges'", cmd
   )) != 0) warning(
     "Please run this command in your Terminal (password required):\n  sudo ",
-    chown_cmd, call. = FALSE
+    cmd, call. = FALSE
   )
 }
 

tools/install-bin-unix.sh

@@ -68,4 +68,18 @@ fi
 [ $OSNAME != "Darwin" ] && ./tlmgr option sys_bin $BINDIR
 ./tlmgr postaction install script xetex  # GH issue #313
 ([ -z $CI ] || [ $(echo $CI | tr "[:upper:]" "[:lower:]") != "true" ]) && ./tlmgr option repository ctan
+
+if [ $OSNAME = 'Darwin' ]; then
+  # create the dir if it doesn't exist
+  if [ ! -d /usr/local/bin ]; then
+    echo "Admin privilege (password) is required to create the directory /usr/local/bin:"
+    sudo mkdir -p /usr/local/bin
+  fi
+  # change owner of the dir
+  if [ ! -w /usr/local/bin ]; then
+    echo "Admin privilege (password) is required to make /usr/local/bin writable:"
+    sudo chown -R `whoami`:admin /usr/local/bin
+  fi
+fi
+
 ./tlmgr path add