Add support for installing PowerShell modules (see ScoopInstaller#1246)

lib/install.ps1

@@ -40,6 +40,7 @@ function install_app($app, $architecture, $global) {
     $dir = link_current $dir
     create_shims $manifest $dir $global $architecture
     create_startmenu_shortcuts $manifest $dir $global
+    install_psmodule $manifest $dir $global
     if($global) { ensure_scoop_in_path $global } # can assume local scoop is in path
     env_add_path $manifest $dir $global
     env_set $manifest $dir $global

lib/psmodules.ps1

@@ -0,0 +1,57 @@
+$modulesdir = "$scoopdir\modules"
+
+function install_psmodule($manifest, $dir, $global) {
+    $psmodule = $manifest.psmodule
+    if(!$psmodule) { return }
+
+    if($global) {
+        abort "global installs for powershell modules is not implemented!"
+    }
+
+    $modulesdir = ensure $modulesdir
+    ensure_in_psmodulepath $modulesdir $global
+
+    $module_name = $psmodule.name
+    if(!$module_name) {
+        abort "invalid manifest: the 'name' property is missing from 'psmodule'"
+        return
+    }
+
+    $linkfrom = "$modulesdir\$module_name"
+    write-host "installing PowerShell module '$module_name'"
+
+    write-host "linking $(friendly_path $linkfrom) => $(friendly_path $dir)"
+
+    if(test-path $linkfrom) {
+        warn "$(friendly_path $linkfrom) already exists: will be replaced"
+        cmd /c rmdir $linkfrom
+    }
+
+    cmd /c mklink /j $linkfrom $dir | out-null
+}
+
+function uninstall_psmodule($manifest, $dir, $global) {
+    $psmodule = $manifest.psmodule
+    if(!$psmodule) { return }
+
+    $module_name = $psmodule.name
+    write-host "uninstalling PowerShell module '$module_name'"
+
+    $linkfrom = "$modulesdir\$module_name"
+    if(test-path $linkfrom) {
+        write-host "removing $(friendly_path $linkfrom)"
+        $linkfrom = resolve-path $linkfrom
+        cmd /c rmdir $linkfrom
+    }
+}
+
+function ensure_in_psmodulepath($dir, $global) {
+    $path = env 'psmodulepath' $global
+    $dir = fullpath $dir
+    if($path -notmatch [regex]::escape($dir)) {
+        echo "adding $(friendly_path $dir) to $(if($global){'global'}else{'your'}) PowerShell module path"
+
+        env 'psmodulepath' $global "$dir;$path" # for future sessions...
+        $env:psmodulepath = "$dir;$env:psmodulepath" # for this session
+    }
+}

libexec/scoop-install.ps1

@@ -22,6 +22,7 @@
 . "$psscriptroot\..\lib\decompress.ps1"
 . "$psscriptroot\..\lib\install.ps1"
 . "$psscriptroot\..\lib\shortcuts.ps1"
+. "$psscriptroot\..\lib\psmodules.ps1"
 . "$psscriptroot\..\lib\versions.ps1"
 . "$psscriptroot\..\lib\help.ps1"
 . "$psscriptroot\..\lib\getopt.ps1"

libexec/scoop-uninstall.ps1

@@ -9,6 +9,7 @@
 . "$psscriptroot\..\lib\help.ps1"
 . "$psscriptroot\..\lib\install.ps1"
 . "$psscriptroot\..\lib\shortcuts.ps1"
+. "$psscriptroot\..\lib\psmodules.ps1"
 . "$psscriptroot\..\lib\versions.ps1"
 . "$psscriptroot\..\lib\getopt.ps1"
 . "$psscriptroot\..\lib\config.ps1"
@@ -64,10 +65,12 @@ foreach($app in $apps) {
     rm_startmenu_shortcuts $manifest $global
 
     # If a junction was used during install, that will have been used
-    # as the reference directory. Othewise it will just be the version
+    # as the reference directory. Otherwise it will just be the version
     # directory.
     $refdir = unlink_current $dir
 
+    uninstall_psmodule $manifest $refdir $global
+
     env_rm_path $manifest $refdir $global
     env_rm $manifest $global
 

libexec/scoop-update.ps1

@@ -14,6 +14,7 @@
 . "$psscriptroot\..\lib\core.ps1"
 . "$psscriptroot\..\lib\install.ps1"
 . "$psscriptroot\..\lib\shortcuts.ps1"
+. "$psscriptroot\..\lib\psmodules.ps1"
 . "$psscriptroot\..\lib\decompress.ps1"
 . "$psscriptroot\..\lib\manifest.ps1"
 . "$psscriptroot\..\lib\buckets.ps1"