diff --git a/pkgs/build-support/cc-wrapper/cc-wrapper.sh b/pkgs/build-support/cc-wrapper/cc-wrapper.sh
index f5bcfc9f985..e6f5a5a9f7d 100644
--- a/pkgs/build-support/cc-wrapper/cc-wrapper.sh
+++ b/pkgs/build-support/cc-wrapper/cc-wrapper.sh
@@ -2,6 +2,10 @@
 set -eu -o pipefail
 shopt -s nullglob
 
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
 path_backup="$PATH"
 
 # That @-vars are substituted separately from bash evaluation makes
diff --git a/pkgs/build-support/cc-wrapper/gnat-wrapper.sh b/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
index 42df660211b..b15f1e461e5 100644
--- a/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
+++ b/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
@@ -2,6 +2,10 @@
 set -eu -o pipefail
 shopt -s nullglob
 
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
 # N.B. Gnat is not used during bootstrapping, so we don't need to
 # worry about the old bash empty array `set -u` workarounds.
 
diff --git a/pkgs/build-support/cc-wrapper/gnatlink-wrapper.sh b/pkgs/build-support/cc-wrapper/gnatlink-wrapper.sh
index b0615731b28..88e644dc54d 100644
--- a/pkgs/build-support/cc-wrapper/gnatlink-wrapper.sh
+++ b/pkgs/build-support/cc-wrapper/gnatlink-wrapper.sh
@@ -2,6 +2,10 @@
 set -eu -o pipefail
 shopt -s nullglob
 
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
 # N.B. Gnat is not used during bootstrapping, so we don't need to
 # worry about the old bash empty array `set -u` workarounds.
 
diff --git a/pkgs/build-support/cc-wrapper/ld-solaris-wrapper.sh b/pkgs/build-support/cc-wrapper/ld-solaris-wrapper.sh
index 72c999ff8bc..5d81e34a047 100755
--- a/pkgs/build-support/cc-wrapper/ld-solaris-wrapper.sh
+++ b/pkgs/build-support/cc-wrapper/ld-solaris-wrapper.sh
@@ -2,6 +2,10 @@
 set -eu -o pipefail
 shopt -s nullglob
 
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
 declare -a args=("$@")
 # I've also tried adding -z direct and -z lazyload, but it gave too many problems with C++ exceptions :'(
 # Also made sure libgcc would not be lazy-loaded, as suggested here: https://www.illumos.org/issues/2534#note-3
diff --git a/pkgs/build-support/cc-wrapper/ld-wrapper.sh b/pkgs/build-support/cc-wrapper/ld-wrapper.sh
index a849df86ef0..355ea881898 100644
--- a/pkgs/build-support/cc-wrapper/ld-wrapper.sh
+++ b/pkgs/build-support/cc-wrapper/ld-wrapper.sh
@@ -2,6 +2,10 @@
 set -eu -o pipefail
 shopt -s nullglob
 
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
 path_backup="$PATH"
 
 # phase separation makes this look useless