diff --git a/pkgs/applications/networking/browsers/firefox/common.nix b/pkgs/applications/networking/browsers/firefox/common.nix
index e8deb9fcd9cc..07243fe10ed9 100644
--- a/pkgs/applications/networking/browsers/firefox/common.nix
+++ b/pkgs/applications/networking/browsers/firefox/common.nix
@@ -524,7 +524,7 @@ buildStdenv.mkDerivation ({
             fi
 
             # Extract the debug info.
-            header "separating debug info from $i (build ID $id)"
+            echo "separating debug info from $i (build ID $id)"
             mkdir -p "$dst/''${id:0:2}"
             $OBJCOPY --only-keep-debug "$i" "$dst/''${id:0:2}/''${id:2}.debug"
 
diff --git a/pkgs/build-support/fetchbzr/builder.sh b/pkgs/build-support/fetchbzr/builder.sh
index 163f6fc60eea..380642a5e681 100644
--- a/pkgs/build-support/fetchbzr/builder.sh
+++ b/pkgs/build-support/fetchbzr/builder.sh
@@ -1,10 +1,8 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source "$stdenv/setup"
 
-header "exporting \`$url' (revision $rev) into \`$out'"
+echo "exporting \`$url' (revision $rev) into \`$out'"
 
 # Perform a lightweight checkout so that we don't end up importing
 # all the repository's history.
 BZR_LOG=/dev/null bzr -Ossl.cert_reqs=none export -r "$rev" --format=dir "$out" "$url"
-
-stopNest
diff --git a/pkgs/build-support/fetchcvs/builder.sh b/pkgs/build-support/fetchcvs/builder.sh
index 90363275b973..4b49e9676ec0 100644
--- a/pkgs/build-support/fetchcvs/builder.sh
+++ b/pkgs/build-support/fetchcvs/builder.sh
@@ -24,5 +24,3 @@ else
 fi
 (cd export && cvs -f -z0 -d "$cvsRoot" export $tag "$module")
 mv export/* $out
-
-stopNest
diff --git a/pkgs/build-support/fetchdarcs/builder.sh b/pkgs/build-support/fetchdarcs/builder.sh
index 018852770504..ce5537f46f40 100644
--- a/pkgs/build-support/fetchdarcs/builder.sh
+++ b/pkgs/build-support/fetchdarcs/builder.sh
@@ -11,10 +11,8 @@ elif test -n "$context"; then
     tagflags="--context=$context"
 fi
 
-header "getting $url $partial ${tagtext} into $out"
+echo "getting $url $partial ${tagtext} into $out"
 
 darcs get --lazy $tagflags "$url" "$out"
 # remove metadata, because it can change
 rm -rf "$out/_darcs"
-
-stopNest
diff --git a/pkgs/build-support/fetchdocker/fetchdocker-builder.sh b/pkgs/build-support/fetchdocker/fetchdocker-builder.sh
index e5a1a61b78d3..4eb70f672d48 100644
--- a/pkgs/build-support/fetchdocker/fetchdocker-builder.sh
+++ b/pkgs/build-support/fetchdocker/fetchdocker-builder.sh
@@ -1,6 +1,6 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source "${stdenv}/setup"
-header "exporting ${repository}/${imageName} (tag: ${tag}) into ${out}"
+echo "exporting ${repository}/${imageName} (tag: ${tag}) into ${out}"
 mkdir -p "${out}"
 
 cat <<EOF > "${out}/compositeImage.sh"
@@ -26,4 +26,3 @@ ${gnutar}/bin/tar \
   -c "${manifest}" "${repositories}" -T "${imageFileStorePaths}"
 EOF
 chmod +x "${out}/compositeImage.sh"
-stopNest
diff --git a/pkgs/build-support/fetchdocker/generic-fetcher.nix b/pkgs/build-support/fetchdocker/generic-fetcher.nix
index 3b0c33770467..6a7b977db29f 100644
--- a/pkgs/build-support/fetchdocker/generic-fetcher.nix
+++ b/pkgs/build-support/fetchdocker/generic-fetcher.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
   inherit name;
   builder = writeText "${fetcher}-builder.sh" ''
     source "$stdenv/setup"
-    header "${fetcher} exporting to $out"
+    echo "${fetcher} exporting to $out"
 
     declare -A creds
 
@@ -49,7 +49,7 @@ stdenv.mkDerivation {
     fi
 
     if [ -f "$dockerCredentialsFile" ]; then
-      header "using credentials from $dockerCredentialsFile"
+      echo "using credentials from $dockerCredentialsFile"
 
       CREDSFILE=$(cat "$dockerCredentialsFile")
       creds[token]=$(${awk} -F'=' '/DOCKER_TOKEN/ {print $2}' <<< "$CREDSFILE" | head -n1)
@@ -77,8 +77,6 @@ stdenv.mkDerivation {
       ${layerDigestFlag} \
       "${repository}/${imageName}" \
       "${tag}"
-
-    stopNest
   '';
 
   buildInputs = [ haskellPackages.hocker ];
diff --git a/pkgs/build-support/fetchfirefoxaddon/default.nix b/pkgs/build-support/fetchfirefoxaddon/default.nix
index 0fa51e69840c..fe9ff5c469ba 100644
--- a/pkgs/build-support/fetchfirefoxaddon/default.nix
+++ b/pkgs/build-support/fetchfirefoxaddon/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
   builder = writeScript "xpibuilder" ''
     source $stdenv/setup
 
-    header "firefox addon $name into $out"
+    echo "firefox addon $name into $out"
 
     UUID="${extid}"
     mkdir -p "$out/$UUID"
diff --git a/pkgs/build-support/fetchfossil/builder.sh b/pkgs/build-support/fetchfossil/builder.sh
index 009b23c406d6..36b758ab574e 100644
--- a/pkgs/build-support/fetchfossil/builder.sh
+++ b/pkgs/build-support/fetchfossil/builder.sh
@@ -1,6 +1,6 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
-header "Cloning Fossil $url [$rev] into $out"
+echo "Cloning Fossil $url [$rev] into $out"
 
 # Fossil, bless its adorable little heart, wants to write global configuration
 # to $HOME/.fossil. AFAICT, there is no way to disable this functionality.
@@ -19,5 +19,3 @@ popd
 
 # Just nuke the checkout file.
 rm $out/.fslckout
-
-stopNest
diff --git a/pkgs/build-support/fetchgit/builder.sh b/pkgs/build-support/fetchgit/builder.sh
index acb970639ab1..77f6381b09ab 100644
--- a/pkgs/build-support/fetchgit/builder.sh
+++ b/pkgs/build-support/fetchgit/builder.sh
@@ -6,7 +6,7 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
 
-header "exporting $url (rev $rev) into $out"
+echo "exporting $url (rev $rev) into $out"
 
 $SHELL $fetcher --builder --url "$url" --out "$out" --rev "$rev" \
   ${leaveDotGit:+--leave-dotGit} \
@@ -18,4 +18,3 @@ $SHELL $fetcher --builder --url "$url" --out "$out" --rev "$rev" \
   ${branchName:+--branch-name "$branchName"}
 
 runHook postFetch
-stopNest
diff --git a/pkgs/build-support/fetchhg/builder.sh b/pkgs/build-support/fetchhg/builder.sh
index cec0e441f229..1ce294757713 100644
--- a/pkgs/build-support/fetchhg/builder.sh
+++ b/pkgs/build-support/fetchhg/builder.sh
@@ -1,10 +1,8 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
-header "getting $url${rev:+ ($rev)} into $out"
+echo "getting $url${rev:+ ($rev)} into $out"
 
 hg clone --insecure "$url" hg-clone
 
 hg archive -q$subrepoClause -y ${rev:+-r "$rev"} --cwd hg-clone $out
 rm -f $out/.hg_archival.txt
-
-stopNest
diff --git a/pkgs/build-support/fetchmtn/builder.sh b/pkgs/build-support/fetchmtn/builder.sh
index 7db66730dab8..1aabd7949ee1 100644
--- a/pkgs/build-support/fetchmtn/builder.sh
+++ b/pkgs/build-support/fetchmtn/builder.sh
@@ -8,7 +8,7 @@ if ! [ -f "$cacheDB" ]; then
     mtn --db "$cacheDB" db init
 fi
 
-header "getting revision $selector";
+echo "getting revision $selector";
 
 done=;
 for source in $dbs; do
@@ -32,9 +32,7 @@ for source in $dbs; do
     fi;
 done;
 
-stopNest;
-
-header "checking out the revision $revision";
+echo "checking out the revision $revision";
 
 if test -n "$done"; then
     mtn checkout --db "$cacheDB" -r "$revision" "$out" -b "${branch}"
@@ -43,10 +41,6 @@ else
     exit 1;
 fi;
 
-stopNest
-
-header "clearing _MTN in the output"
+echo "clearing _MTN in the output"
 
 rm -rf "$out/_MTN"
-
-stopNest
diff --git a/pkgs/build-support/fetchsvn/builder.sh b/pkgs/build-support/fetchsvn/builder.sh
index b58e5a88b3cd..aa4d049aba43 100644
--- a/pkgs/build-support/fetchsvn/builder.sh
+++ b/pkgs/build-support/fetchsvn/builder.sh
@@ -1,7 +1,7 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
 
-header "exporting $url (r$rev) into $out"
+echo "exporting $url (r$rev) into $out"
 
 if test -n "$http_proxy"; then
     # Configure proxy
@@ -22,5 +22,3 @@ fi;
 svn export --trust-server-cert --non-interactive \
     ${ignoreExternals:+--ignore-externals} ${ignoreKeywords:+--ignore-keywords} \
     -r "$rev" "$url" "$out"
-
-stopNest
diff --git a/pkgs/build-support/fetchsvnssh/builder.sh b/pkgs/build-support/fetchsvnssh/builder.sh
index b0441299dd2c..5782151524f7 100644
--- a/pkgs/build-support/fetchsvnssh/builder.sh
+++ b/pkgs/build-support/fetchsvnssh/builder.sh
@@ -1,7 +1,7 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
 
-header "exporting $url (r$rev) into $out"
+echo "exporting $url (r$rev) into $out"
 
 if test "$sshSupport"; then
     export SVN_SSH="$openssh/bin/ssh"
@@ -12,5 +12,3 @@ fi
 # whether the server is being spoofed --- only the cryptographic
 # hash of the output matters.
 expect -f $sshSubversion "$username" "$password" "$rev" "$url" $out
-
-stopNest
diff --git a/pkgs/build-support/fetchurl/builder.sh b/pkgs/build-support/fetchurl/builder.sh
index dd987f41b446..e8eaba934858 100644
--- a/pkgs/build-support/fetchurl/builder.sh
+++ b/pkgs/build-support/fetchurl/builder.sh
@@ -37,7 +37,7 @@ if [ -n "$downloadToTemp" ]; then downloadedFile="$TMPDIR/file"; fi
 tryDownload() {
     local url="$1"
     echo
-    header "trying $url"
+    echo "trying $url"
     local curlexit=18;
 
     success=
diff --git a/pkgs/build-support/release/debian-build.nix b/pkgs/build-support/release/debian-build.nix
index 9104bf2dce5c..679adad827da 100644
--- a/pkgs/build-support/release/debian-build.nix
+++ b/pkgs/build-support/release/debian-build.nix
@@ -43,9 +43,8 @@ vmTools.runInLinuxImage (stdenv.mkDerivation (
       [ ! -f /etc/lsb-release ] || (source /etc/lsb-release; echo "OS release: $DISTRIB_DESCRIPTION")
       echo "System/kernel: $(uname -a)"
       if test -e /etc/debian_version; then echo "Debian release: $(cat /etc/debian_version)"; fi
-      header "installed Debian packages"
+      echo "installed Debian packages"
       dpkg-query --list
-      stopNest
     '';
 
     installPhase = ''
@@ -73,11 +72,10 @@ vmTools.runInLinuxImage (stdenv.mkDerivation (
       [ "$(echo $out/debs/*.deb)" != "" ]
 
       for i in $out/debs/*.deb; do
-        header "Generated DEB package: $i"
+        echo "Generated DEB package: $i"
         dpkg-deb --info "$i"
         pkgName=$(dpkg-deb -W "$i" | awk '{print $1}')
         echo "file deb $i" >> $out/nix-support/hydra-build-products
-        stopNest
       done
       dpkg -i $out/debs/*.deb
 
diff --git a/pkgs/build-support/release/nix-build.nix b/pkgs/build-support/release/nix-build.nix
index 5ed2b0752efc..9578fbf482f2 100644
--- a/pkgs/build-support/release/nix-build.nix
+++ b/pkgs/build-support/release/nix-build.nix
@@ -74,10 +74,9 @@ stdenv.mkDerivation (
       if test -n "$succeedOnFailure"; then
           if test -n "$keepBuildDirectory"; then
               KEEPBUILDDIR="$out/`basename $TMPDIR`"
-              header "Copying build directory to $KEEPBUILDDIR"
+              echo "Copying build directory to $KEEPBUILDDIR"
               mkdir -p $KEEPBUILDDIR
               cp -R "$TMPDIR/"* $KEEPBUILDDIR
-              stopNest
           fi
       fi
     '';
diff --git a/pkgs/build-support/release/source-tarball.nix b/pkgs/build-support/release/source-tarball.nix
index 742cce13b7bf..d624d071cc21 100644
--- a/pkgs/build-support/release/source-tarball.nix
+++ b/pkgs/build-support/release/source-tarball.nix
@@ -64,10 +64,9 @@ stdenv.mkDerivation (
       if test -n "$succeedOnFailure"; then
           if test -n "$keepBuildDirectory"; then
               KEEPBUILDDIR="$out/`basename $TMPDIR`"
-              header "Copying build directory to $KEEPBUILDDIR"
+              echo "Copying build directory to $KEEPBUILDDIR"
               mkdir -p $KEEPBUILDDIR
               cp -R "$TMPDIR/"* $KEEPBUILDDIR
-              stopNest
           fi
       fi
     '';
diff --git a/pkgs/build-support/setup-hooks/audit-tmpdir.sh b/pkgs/build-support/setup-hooks/audit-tmpdir.sh
index 9c03bc2ee935..36714178156b 100644
--- a/pkgs/build-support/setup-hooks/audit-tmpdir.sh
+++ b/pkgs/build-support/setup-hooks/audit-tmpdir.sh
@@ -13,7 +13,7 @@ auditTmpdir() {
     local dir="$1"
     [ -e "$dir" ] || return 0
 
-    header "checking for references to $TMPDIR/ in $dir..."
+    echo "checking for references to $TMPDIR/ in $dir..."
 
     local i
     find "$dir" -type f -print0 | while IFS= read -r -d $'\0' i; do
@@ -36,6 +36,4 @@ auditTmpdir() {
         fi
 
     done
-
-    stopNest
 }
diff --git a/pkgs/build-support/setup-hooks/canonicalize-jars.sh b/pkgs/build-support/setup-hooks/canonicalize-jars.sh
index 8c55810748ea..5137bfc94b01 100644
--- a/pkgs/build-support/setup-hooks/canonicalize-jars.sh
+++ b/pkgs/build-support/setup-hooks/canonicalize-jars.sh
@@ -6,12 +6,11 @@ fixupOutputHooks+=('if [ -z "$dontCanonicalizeJars" -a -e "$prefix" ]; then cano
 
 canonicalizeJarsIn() {
   local dir="$1"
-  header "canonicalizing jars in $dir"
+  echo "canonicalizing jars in $dir"
   dir="$(realpath -sm -- "$dir")"
   while IFS= read -rd '' f; do
     canonicalizeJar "$f"
   done < <(find -- "$dir" -type f -name '*.jar' -print0)
-  stopNest
 }
 
 source @canonicalize_jar@
diff --git a/pkgs/build-support/setup-hooks/patch-shebangs.sh b/pkgs/build-support/setup-hooks/patch-shebangs.sh
index 04ebcd2cc64e..a26113abea88 100644
--- a/pkgs/build-support/setup-hooks/patch-shebangs.sh
+++ b/pkgs/build-support/setup-hooks/patch-shebangs.sh
@@ -100,8 +100,6 @@ patchShebangs() {
             fi
         fi
     done < <(find "$@" -type f -perm -0100 -print0)
-
-    stopNest
 }
 
 patchShebangsAuto () {
diff --git a/pkgs/build-support/setup-hooks/postgresql-test-hook/postgresql-test-hook.sh b/pkgs/build-support/setup-hooks/postgresql-test-hook/postgresql-test-hook.sh
index 041a3f565332..de8faad5475e 100644
--- a/pkgs/build-support/setup-hooks/postgresql-test-hook/postgresql-test-hook.sh
+++ b/pkgs/build-support/setup-hooks/postgresql-test-hook/postgresql-test-hook.sh
@@ -53,7 +53,7 @@ EOF
     echo >&2 'initdb not found. Did you add postgresql to the checkInputs?'
     false
   fi
-  header 'initializing postgresql'
+  echo 'initializing postgresql'
   initdb -U postgres
 
   # Move the socket
@@ -65,15 +65,15 @@ EOF
     echo "listen_addresses = ''" >>"$PGDATA/postgresql.conf"
   fi
 
-  header 'starting postgresql'
+  echo 'starting postgresql'
   eval "${postgresqlStartCommands:-pg_ctl start}"
 
-  header 'setting up postgresql'
+  echo 'setting up postgresql'
   eval "$postgresqlTestSetupCommands"
 
 }
 
 postgresqlStop() {
-  header 'stopping postgresql'
+  echo 'stopping postgresql'
   pg_ctl stop
 }
diff --git a/pkgs/build-support/setup-hooks/separate-debug-info.sh b/pkgs/build-support/setup-hooks/separate-debug-info.sh
index be94af545be1..3c8c9c294c3e 100644
--- a/pkgs/build-support/setup-hooks/separate-debug-info.sh
+++ b/pkgs/build-support/setup-hooks/separate-debug-info.sh
@@ -26,7 +26,7 @@ _separateDebugInfo() {
         fi
 
         # Extract the debug info.
-        header "separating debug info from $i (build ID $id)"
+        echo "separating debug info from $i (build ID $id)"
         mkdir -p "$dst/${id:0:2}"
 
         # This may fail, e.g. if the binary is for a different
diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index 7bae2fc7cfb2..84754e580302 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -527,9 +527,8 @@ rec {
       echo "System/kernel: $(uname -a)"
       if test -e /etc/fedora-release; then echo "Fedora release: $(cat /etc/fedora-release)"; fi
       if test -e /etc/SuSE-release; then echo "SUSE release: $(cat /etc/SuSE-release)"; fi
-      header "installed RPM packages"
+      echo "installed RPM packages"
       rpm -qa --qf "%{Name}-%{Version}-%{Release} (%{Arch}; %{Distribution}; %{Vendor})\n"
-      stopNest
     '';
 
     buildPhase = ''
@@ -559,9 +558,8 @@ rec {
       find $rpmout -name "*.rpm" -exec cp {} $out/$outDir \;
 
       for i in $out/$outDir/*.rpm; do
-        header "Generated RPM/SRPM: $i"
+        echo "Generated RPM/SRPM: $i"
         rpm -qip $i
-        stopNest
       done
 
       eval "$postInstall"
diff --git a/pkgs/development/compilers/chicken/4/fetchegg/builder.sh b/pkgs/development/compilers/chicken/4/fetchegg/builder.sh
index 5f41a36263a9..cb56eabc5d78 100644
--- a/pkgs/development/compilers/chicken/4/fetchegg/builder.sh
+++ b/pkgs/development/compilers/chicken/4/fetchegg/builder.sh
@@ -1,10 +1,8 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
 
-header "exporting egg ${eggName} (version $version) into $out"
+echo "exporting egg ${eggName} (version $version) into $out"
 
 mkdir -p $out
 chicken-install -r "${eggName}:${version}"
 cp -r ${eggName}/* $out/
-
-stopNest
diff --git a/pkgs/development/compilers/chicken/5/fetchegg/builder.sh b/pkgs/development/compilers/chicken/5/fetchegg/builder.sh
index f02e01757787..34c9de37233d 100644
--- a/pkgs/development/compilers/chicken/5/fetchegg/builder.sh
+++ b/pkgs/development/compilers/chicken/5/fetchegg/builder.sh
@@ -1,11 +1,9 @@
 if [ -e .attrs.sh ]; then source .attrs.sh; fi
 source $stdenv/setup
 
-header "exporting egg ${eggName} (version $version) into $out"
+echo "exporting egg ${eggName} (version $version) into $out"
 
 mkdir -p $out
 CHICKEN_EGG_CACHE=. chicken-install -r "${eggName}:${version}"
 rm ${eggName}/{STATUS,TIMESTAMP}
 cp -r ${eggName}/* $out/
-
-stopNest
diff --git a/pkgs/development/tools/misc/patchelf/setup-hook.sh b/pkgs/development/tools/misc/patchelf/setup-hook.sh
index 576b9ca2103e..8f010a3f4d0b 100644
--- a/pkgs/development/tools/misc/patchelf/setup-hook.sh
+++ b/pkgs/development/tools/misc/patchelf/setup-hook.sh
@@ -8,7 +8,7 @@ patchELF() {
     local dir="$1"
     [ -e "$dir" ] || return 0
 
-    header "shrinking RPATHs of ELF executables and libraries in $dir"
+    echo "shrinking RPATHs of ELF executables and libraries in $dir"
 
     local i
     while IFS= read -r -d $'\0' i; do
@@ -17,6 +17,4 @@ patchELF() {
         echo "shrinking $i"
         patchelf --shrink-rpath "$i" || true
     done < <(find "$dir" -type f -print0)
-
-    stopNest
 }
diff --git a/pkgs/os-specific/linux/sgx/psw/default.nix b/pkgs/os-specific/linux/sgx/psw/default.nix
index ba2d0967e45d..4a5e50d9c6ab 100644
--- a/pkgs/os-specific/linux/sgx/psw/default.nix
+++ b/pkgs/os-specific/linux/sgx/psw/default.nix
@@ -132,7 +132,7 @@ stdenv.mkDerivation rec {
   # NixOS module which is based on those files without relying on them. Still, it
   # is helpful to have properly patched versions for non-NixOS distributions.
   postFixup = ''
-    header "Fixing aesmd.service"
+    echo "Fixing aesmd.service"
     substituteInPlace $out/lib/systemd/system/aesmd.service \
       --replace '@aesm_folder@' \
                 "$out/aesm" \
@@ -149,7 +149,7 @@ stdenv.mkDerivation rec {
       --replace "/bin/kill" \
                 "${coreutils}/bin/kill"
 
-    header "Fixing remount-dev-exec.service"
+    echo "Fixing remount-dev-exec.service"
     substituteInPlace $out/lib/systemd/system/remount-dev-exec.service \
       --replace '/bin/mount' \
                 "${util-linux}/bin/mount"
diff --git a/pkgs/os-specific/linux/sgx/sdk/default.nix b/pkgs/os-specific/linux/sgx/sdk/default.nix
index 5213dc1e4fda..053aaecbcbb7 100644
--- a/pkgs/os-specific/linux/sgx/sdk/default.nix
+++ b/pkgs/os-specific/linux/sgx/sdk/default.nix
@@ -109,7 +109,7 @@ stdenv.mkDerivation rec {
       };
     in
     ''
-      header "Setting up IPP crypto build artifacts"
+      echo "Setting up IPP crypto build artifacts"
 
       pushd 'external/ippcp_internal'
 
@@ -149,7 +149,7 @@ stdenv.mkDerivation rec {
     ./linux/installer/bin/sgx_linux_x64_sdk_${version}.bin -prefix $installDir
     installDir=$installDir/sgxsdk
 
-    header "Move files created by installer"
+    echo "Move files created by installer"
 
     mkdir -p $out/bin
     pushd $out
@@ -206,15 +206,15 @@ stdenv.mkDerivation rec {
 
 
   preFixup = ''
-    header "Strip sgxsdk prefix"
+    echo "Strip sgxsdk prefix"
     for path in "$out/share/bin/environment" "$out/bin/sgx-gdb"; do
       substituteInPlace $path --replace "$TMPDIR/sgxsdk" "$out"
     done
 
-    header "Fixing pkg-config files"
+    echo "Fixing pkg-config files"
     sed -i "s|prefix=.*|prefix=$out|g" $out/lib/pkgconfig/*.pc
 
-    header "Fixing SGX_SDK default in samples"
+    echo "Fixing SGX_SDK default in samples"
     substituteInPlace $out/share/SampleCode/LocalAttestation/buildenv.mk \
       --replace '/opt/intel/sgxsdk' "$out"
     for file in $out/share/SampleCode/*/Makefile; do
@@ -222,12 +222,12 @@ stdenv.mkDerivation rec {
         --replace '/opt/intel/sgxsdk' "$out"
     done
 
-    header "Fixing BINUTILS_DIR in buildenv.mk"
+    echo "Fixing BINUTILS_DIR in buildenv.mk"
     substituteInPlace $out/share/bin/buildenv.mk \
       --replace 'BINUTILS_DIR ?= /usr/local/bin' \
                 'BINUTILS_DIR ?= ${BINUTILS_DIR}'
 
-    header "Fixing GDB path in bin/sgx-gdb"
+    echo "Fixing GDB path in bin/sgx-gdb"
     substituteInPlace $out/bin/sgx-gdb --replace '/usr/local/bin/gdb' '${gdb}/bin/gdb'
   '';
 
diff --git a/pkgs/top-level/make-tarball.nix b/pkgs/top-level/make-tarball.nix
index 6858e37fabeb..dbe96bd096f8 100644
--- a/pkgs/top-level/make-tarball.nix
+++ b/pkgs/top-level/make-tarball.nix
@@ -47,10 +47,10 @@ pkgs.releaseTools.sourceTarball {
     opts=(--option build-users-group "")
     nix-store --init
 
-    header "checking eval-release.nix"
+    echo "checking eval-release.nix"
     nix-instantiate --eval --strict --show-trace ./maintainers/scripts/eval-release.nix > /dev/null
 
-    header "checking find-tarballs.nix"
+    echo "checking find-tarballs.nix"
     nix-instantiate --readonly-mode --eval --strict --show-trace --json \
        ./maintainers/scripts/find-tarballs.nix \
       --arg expr 'import ./maintainers/scripts/all-tarballs.nix' > $TMPDIR/tarballs.json
@@ -61,7 +61,7 @@ pkgs.releaseTools.sourceTarball {
       exit 1
     fi
 
-    header "generating packages.json"
+    echo "generating packages.json"
     mkdir -p $out/nix-support
     echo -n '{"version":2,"packages":' > tmp
     nix-env -f . -I nixpkgs=$src -qa --meta --json --arg config 'import ${./packages-config.nix}' "''${opts[@]}" >> tmp
diff --git a/pkgs/top-level/nixpkgs-basic-release-checks.nix b/pkgs/top-level/nixpkgs-basic-release-checks.nix
index e2b81b20c5b0..ab9dac4b380c 100644
--- a/pkgs/top-level/nixpkgs-basic-release-checks.nix
+++ b/pkgs/top-level/nixpkgs-basic-release-checks.nix
@@ -32,7 +32,7 @@ pkgs.runCommand "nixpkgs-release-checks" { src = nixpkgs; buildInputs = [nix]; }
 
     # Check that all-packages.nix evaluates on a number of platforms without any warnings.
     for platform in ${pkgs.lib.concatStringsSep " " supportedSystems}; do
-        header "checking Nixpkgs on $platform"
+        echo "checking Nixpkgs on $platform"
 
         # To get a call trace; see https://nixos.org/manual/nixpkgs/stable/#function-library-lib.trivial.warn
         # Relies on impure eval