diff --git a/pkgs/applications/networking/nload/default.nix b/pkgs/applications/networking/nload/default.nix
index 8b97bbf4635a..e46a95d71e49 100644
--- a/pkgs/applications/networking/nload/default.nix
+++ b/pkgs/applications/networking/nload/default.nix
@@ -36,5 +36,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl2;
     platforms = lib.platforms.linux;
     maintainers = [ lib.maintainers.devhell ];
+    mainProgram = "nload";
   };
 }
diff --git a/pkgs/shells/any-nix-shell/default.nix b/pkgs/shells/any-nix-shell/default.nix
index 095347a3ca99..fd4807e6d675 100644
--- a/pkgs/shells/any-nix-shell/default.nix
+++ b/pkgs/shells/any-nix-shell/default.nix
@@ -25,5 +25,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     homepage = "https://github.com/haslersn/any-nix-shell";
     maintainers = with maintainers; [ haslersn ];
+    mainProgram = "any-nix-shell";
   };
 }
diff --git a/pkgs/shells/zsh/default.nix b/pkgs/shells/zsh/default.nix
index 1297e622269f..d2bdd5d34d22 100644
--- a/pkgs/shells/zsh/default.nix
+++ b/pkgs/shells/zsh/default.nix
@@ -131,6 +131,7 @@ EOF
     homepage = "https://www.zsh.org/";
     maintainers = with lib.maintainers; [ pSub artturin ];
     platforms = lib.platforms.unix;
+    mainProgram = "zsh";
   };
 
   passthru = {
diff --git a/pkgs/tools/admin/procs/default.nix b/pkgs/tools/admin/procs/default.nix
index 03d26fd64988..b9c2a463909b 100644
--- a/pkgs/tools/admin/procs/default.nix
+++ b/pkgs/tools/admin/procs/default.nix
@@ -31,5 +31,6 @@ rustPlatform.buildRustPackage rec {
     changelog = "https://github.com/dalance/procs/raw/v${version}/CHANGELOG.md";
     license = licenses.mit;
     maintainers = with maintainers; [ Br1ght0ne sciencentistguy ];
+    mainProgram = "procs";
   };
 }
diff --git a/pkgs/tools/misc/exa/default.nix b/pkgs/tools/misc/exa/default.nix
index 91d0b1c49d09..d22303e150c9 100644
--- a/pkgs/tools/misc/exa/default.nix
+++ b/pkgs/tools/misc/exa/default.nix
@@ -58,5 +58,6 @@ rustPlatform.buildRustPackage {
     homepage = "https://the.exa.website";
     license = licenses.mit;
     maintainers = with maintainers; [ ehegnes lilyball globin fortuneteller2k ];
+    mainProgram = "exa";
   };
 }