Also report distro detection disabling

src/alire/alire-origins-deployers-system.adb

@@ -127,16 +127,24 @@ package body Alire.Origins.Deployers.System is
    end Dont_Ask_Permission;
 
    ---------------------
-   -- Executable_Path --
+   -- Executable_Name --
    ---------------------
 
-   function Executable_Path return Optional_Absolute_Path is
+   function Executable_Name return String is
       Make : constant Origin := New_System ("make");
       --  We use a mock system package to be able to obtain a deployer. It
       --  doesn't matter if this system package doesn't exist.
    begin
-      return OS_Lib.Locate_Exec_On_Path
-        (Platform_Deployer (Make).Executable_Name);
+      return Platform_Deployer (Make).Executable_Name;
+   end Executable_Name;
+
+   ---------------------
+   -- Executable_Path --
+   ---------------------
+
+   function Executable_Path return Optional_Absolute_Path is
+   begin
+      return OS_Lib.Locate_Exec_On_Path (Executable_Name);
    end Executable_Path;
 
 end Alire.Origins.Deployers.System;

src/alire/alire-origins-deployers-system.ads

@@ -62,9 +62,12 @@ package Alire.Origins.Deployers.System is
    function Platform_Deployer (Package_Name : String) return Deployer'Class is
      (Platform_Deployer (Origins.New_System (Package_Name)));
 
+   function Executable_Name return String;
+   --  Returns the simple name of the executable package manager on the system
+
    function Executable_Path return Optional_Absolute_Path;
-   --  Identifies the package manager executable being called in the current
-   --  platform, or "" if none found.
+   --  Identifies the full path to the package manager executable found in the
+   --  current platform, even if distro detection is disabled.
 
 private
 

src/alire/alire-os_lib.ads

@@ -17,6 +17,7 @@ package Alire.OS_Lib with Preelaborate is
    procedure Setenv (Name : String; Value : String);
 
    function Locate_Exec_On_Path (Exec_Name : String) return String;
-   --  Return the location of an executable if found on PATH, or "" otherwise
+   --  Return the location of an executable if found on PATH, or "" otherwise.
+   --  On Windows, no need to append ".exe" as it will be found without it.
 
 end Alire.OS_Lib;

src/alr/alr-commands-version.adb

@@ -117,10 +117,22 @@ package body Alr.Commands.Version is
          end loop;
       end;
 
-      Table
-        .Append ("system package manager:")
-        .Append (Alire.Origins.Deployers.System.Executable_Path)
-        .New_Row;
+      declare
+         System_Manager : constant String :=
+                            Origins.Deployers.System.Executable_Path;
+      begin
+         Table
+           .Append ("system package manager:")
+           .Append (if System_Manager /= ""
+                    then System_Manager
+                    else "not found: `"
+                       & Origins.Deployers.System.Executable_Name & "`")
+           .New_Row;
+         Table
+           .Append ("distro detection disabled:")
+           .Append (Platforms.Current.Disable_Distribution_Detection'Image)
+           .New_Row;
+      end;
 
       Table.Append ("").New_Row;
       Table.Append ("WORKSPACE").New_Row;