misc: Replace tab indentation with spaces

I've tried to be consistent, using four or eight spaces to line up
with existing code.

17 files changed, 184 insertions, 186 deletions

diff --git a/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh b/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh
index 4604b1fdea727..68ba3ed3a920a 100644
--- a/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh
+++ b/pkgs/development/compilers/ios-cross-compile/9.2_builder.sh
@@ -8,43 +8,43 @@ function extract
 
     case "$1" in
         *.tar.xz)
-	    xz -dc $1 | tar "$tarflags" - ;;
-	*)
-	    printf "Make sure you give a iPhoneOS9.2.sdk.tar.xz file \n" ;;
+        xz -dc $1 | tar "$tarflags" - ;;
+    *)
+        printf "Make sure you give a iPhoneOS9.2.sdk.tar.xz file \n" ;;
     esac
 }
 
 function verify_arch {
     case "$1" in
-	# Our good arches.
-	armv7|arm64) ;;
-	*)
-	    local
-	    acc="armv7 | arm64"
-	    error_message=$(
-		printf '%s is not an acceptable arch. Try one of %s' "$1" "$acc"
-			 )
-	    printf "$error_message\n"
-	    exit
+    # Our good arches.
+    armv7|arm64) ;;
+    *)
+        local
+        acc="armv7 | arm64"
+        error_message=$(
+        printf '%s is not an acceptable arch. Try one of %s' "$1" "$acc"
+             )
+        printf "$error_message\n"
+        exit
     esac
 }
 
 function verify_sdk_version {
     sdk_version=$(basename "$1" | grep -P -o "[0-9].[0-9]+")
     case "$sdk_version" in
-	# Make sure the SDK is correct.
-	[5-9].[0-9]) ;;
-	*)
-	    printf 'No iPhone SDK version in file name\n'
+    # Make sure the SDK is correct.
+    [5-9].[0-9]) ;;
+    *)
+        printf 'No iPhone SDK version in file name\n'
     esac
 }
 
 function do_build {
 
     if [ $# -lt 2 ]; then
-	printf "usage: $0 iPhoneOS.sdk.tar* <target cpu>\n" 1>&2
-	printf "i.e. $0 /path/to/iPhoneOS.sdk.tar.xz armv7\n" 1>&2
-	exit 1
+    printf "usage: $0 iPhoneOS.sdk.tar* <target cpu>\n" 1>&2
+    printf "i.e. $0 /path/to/iPhoneOS.sdk.tar.xz armv7\n" 1>&2
+    exit 1
     fi
 
     mkdir -p $out
@@ -54,7 +54,7 @@ function do_build {
     pushd "$cctools_port"/usage_examples/ios_toolchain &> /dev/null
 
     export LC_ALL=C
-    
+
     local
     triple='%s-apple-darwin11'
     target_dir="$PWD/target"
@@ -75,12 +75,12 @@ function do_build {
     extract "$1"
 
     local sys_lib=$(
-    	find $sdk_dir -name libSystem.dylib -o -name libSystem.tbd | head -n1
-    	  )
+        find $sdk_dir -name libSystem.dylib -o -name libSystem.tbd | head -n1
+          )
 
     if [ -z "$sys_lib" ]; then
-    	printf "SDK should contain libSystem{.dylib,.tbd}\n" 1>&2
-    	exit 1
+        printf "SDK should contain libSystem{.dylib,.tbd}\n" 1>&2
+        exit 1
     fi
 
     local sys_root=$(readlink -f "$(dirname $sys_lib)/../..")
@@ -96,18 +96,18 @@ function do_build {
     printf "int main(){return 0;}" | clang -xc -O2 -o "$target_dir"/bin/dsymutil -
 
     clang -O2 -std=c99 $alt_wrapper \
-    	  -DTARGET_CPU=$(printf '"%s"' "$2") \
-    	  -DNIX_APPLE_HDRS=$(
-    	printf '"%s"' "-I$out/$sdk/usr/include"
-    	  ) \
-    	  -DNIX_APPLE_FRAMEWORKS=$(
-    	printf '"%s"' "$out/$sdk/System/Library/Frameworks"
-    	  ) \
-    	  -DNIX_APPLE_PRIV_FRAMEWORKS=$(
-    	printf '"%s"' "$out/$sdk/System/Library/PrivateFrameworks"
-    	  ) \
-    	  -DOS_VER_MIN=$(printf '"%s"' "7.1") \
-    	  -o "$target_dir/bin/$triple-clang"
+          -DTARGET_CPU=$(printf '"%s"' "$2") \
+          -DNIX_APPLE_HDRS=$(
+        printf '"%s"' "-I$out/$sdk/usr/include"
+          ) \
+          -DNIX_APPLE_FRAMEWORKS=$(
+        printf '"%s"' "$out/$sdk/System/Library/Frameworks"
+          ) \
+          -DNIX_APPLE_PRIV_FRAMEWORKS=$(
+        printf '"%s"' "$out/$sdk/System/Library/PrivateFrameworks"
+          ) \
+          -DOS_VER_MIN=$(printf '"%s"' "7.1") \
+          -o "$target_dir/bin/$triple-clang"
 
     pushd "$target_dir"/bin &>/dev/null
 
@@ -141,8 +141,8 @@ function do_build {
     local me=`whoami`
 
     for d in bin libexec SDK; do
-    	chown -R $me:$me target/$d
-    	cp -R target/$d $out
+        chown -R $me:$me target/$d
+        cp -R target/$d $out
     done
 
     # Crucial piece
diff --git a/pkgs/development/libraries/gdk-pixbuf/setup-hook.sh b/pkgs/development/libraries/gdk-pixbuf/setup-hook.sh
index bdfd00009dc5d..ecf9793b91f6c 100644
--- a/pkgs/development/libraries/gdk-pixbuf/setup-hook.sh
+++ b/pkgs/development/libraries/gdk-pixbuf/setup-hook.sh
@@ -1,16 +1,16 @@
 findGdkPixbufLoaders() {
 
-	# choose the longest loaders.cache
-	local loadersCache="$1/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache"
-	if [[ -f "$loadersCache" ]]; then
-		if [[ -f "${GDK_PIXBUF_MODULE_FILE-}" ]]; then
-			if (( "$(cat "$loadersCache" | wc -l)" > "$(cat "$GDK_PIXBUF_MODULE_FILE" | wc -l)" )); then
-				export GDK_PIXBUF_MODULE_FILE="$loadersCache"
-			fi
-		else
-			export GDK_PIXBUF_MODULE_FILE="$loadersCache"
-		fi
-	fi
+    # choose the longest loaders.cache
+    local loadersCache="$1/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache"
+    if [[ -f "$loadersCache" ]]; then
+        if [[ -f "${GDK_PIXBUF_MODULE_FILE-}" ]]; then
+            if (( "$(cat "$loadersCache" | wc -l)" > "$(cat "$GDK_PIXBUF_MODULE_FILE" | wc -l)" )); then
+                export GDK_PIXBUF_MODULE_FILE="$loadersCache"
+            fi
+        else
+            export GDK_PIXBUF_MODULE_FILE="$loadersCache"
+        fi
+    fi
 
 }
 
diff --git a/pkgs/development/libraries/physics/lhapdf/maintainer.sh b/pkgs/development/libraries/physics/lhapdf/maintainer.sh
index 92c225f90ccdf..6e263dcebfde7 100755
--- a/pkgs/development/libraries/physics/lhapdf/maintainer.sh
+++ b/pkgs/development/libraries/physics/lhapdf/maintainer.sh
@@ -7,7 +7,7 @@ set -xe
 BASE_URL="https://lhapdfsets.web.cern.ch/lhapdfsets/current/"
 
 for pdf_set in `curl -L $BASE_URL 2>/dev/null | "$SED" -e "s/.*<a href=\"\([^\"/]*.tar.gz\)\".*/\1/;tx;d;:x" | sort -u`; do
-	echo -n "    \"${pdf_set%.tar.gz}\" = \""
-	nix-prefetch-url "${BASE_URL}${pdf_set}" 2>/dev/null | tr -d '\n'
-	echo "\";"
+    echo -n "    \"${pdf_set%.tar.gz}\" = \""
+    nix-prefetch-url "${BASE_URL}${pdf_set}" 2>/dev/null | tr -d '\n'
+    echo "\";"
 done
diff --git a/pkgs/development/libraries/slib/setup-hook.sh b/pkgs/development/libraries/slib/setup-hook.sh
index 3c7e91e81886b..e820d80e7a4ea 100644
--- a/pkgs/development/libraries/slib/setup-hook.sh
+++ b/pkgs/development/libraries/slib/setup-hook.sh
@@ -1,12 +1,12 @@
 addSlibPath () {
     if test -f "$1/lib/slib/slibcat"
     then
-	export SCHEME_LIBRARY_PATH="$1/lib/slib/"
-	echo "SLIB found in \`$1'; setting \$SCHEME_LIBRARY_PATH to \`$SCHEME_LIBRARY_PATH'"
+        export SCHEME_LIBRARY_PATH="$1/lib/slib/"
+        echo "SLIB found in \`$1'; setting \$SCHEME_LIBRARY_PATH to \`$SCHEME_LIBRARY_PATH'"
 
-	# This is needed so that `(load-from-path "slib/guile.init")' works.
-	export GUILE_LOAD_PATH="$1/lib:$GUILE_LOAD_PATH"
-	echo "SLIB: setting \$GUILE_LOAD_PATH to \`$GUILE_LOAD_PATH'"
+        # This is needed so that `(load-from-path "slib/guile.init")' works.
+        export GUILE_LOAD_PATH="$1/lib:$GUILE_LOAD_PATH"
+        echo "SLIB: setting \$GUILE_LOAD_PATH to \`$GUILE_LOAD_PATH'"
     fi
 }
 
diff --git a/pkgs/development/lisp-modules/clwrapper/cl-wrapper.sh b/pkgs/development/lisp-modules/clwrapper/cl-wrapper.sh
index 828920c5acccc..d6fec46b449ea 100755
--- a/pkgs/development/lisp-modules/clwrapper/cl-wrapper.sh
+++ b/pkgs/development/lisp-modules/clwrapper/cl-wrapper.sh
@@ -18,59 +18,59 @@ fi
 export NIX_LISP NIX_LISP_LOAD_FILE NIX_LISP_EXEC_CODE NIX_LISP_COMMAND NIX_LISP_FINAL_PARAMETERS
 
 test -n "$NIX_LISP_LD_LIBRARY_PATH" &&
-	export LD_LIBRARY_PATH="$LD_LIBRARY_PATH${LD_LIBRARY_PATH:+:}$NIX_LISP_LD_LIBRARY_PATH"
+        export LD_LIBRARY_PATH="$LD_LIBRARY_PATH${LD_LIBRARY_PATH:+:}$NIX_LISP_LD_LIBRARY_PATH"
 
 declare -a NIX_LISP_FINAL_PARAMETERS;
 
 case "$NIX_LISP" in
-	sbcl)
-		NIX_LISP_LOAD_FILE="--load"
-		NIX_LISP_EXEC_CODE="--eval"
+        sbcl)
+                NIX_LISP_LOAD_FILE="--load"
+                NIX_LISP_EXEC_CODE="--eval"
                 NIX_LISP_QUIT="(quit)"
                 NIX_LISP_NODEBUG='--non-interactive'
-		NIX_LISP_FINAL_PARAMETERS=
+                NIX_LISP_FINAL_PARAMETERS=
                 NIX_LISP_FASL_TYPE="fasl"
-		;;
-	ecl)
-		NIX_LISP_LOAD_FILE="-load"
-		NIX_LISP_EXEC_CODE="-eval"
+                ;;
+        ecl)
+                NIX_LISP_LOAD_FILE="-load"
+                NIX_LISP_EXEC_CODE="-eval"
                 NIX_LISP_QUIT="(quit)"
                 NIX_LISP_NODEBUG='--nodebug'
-		NIX_LISP_FINAL_PARAMETERS=
+                NIX_LISP_FINAL_PARAMETERS=
                 NIX_LISP_FASL_TYPE="fas"
-		;;
-	clisp)
-		NIX_LISP_LOAD_FILE="-c -l"
-		NIX_LISP_EXEC_CODE="-x"
+                ;;
+        clisp)
+                NIX_LISP_LOAD_FILE="-c -l"
+                NIX_LISP_EXEC_CODE="-x"
                 NIX_LISP_QUIT="(quit)"
                 NIX_LISP_NODEBUG='-on-error exit'
-		NIX_LISP_FINAL_PARAMETERS="-repl"
+                NIX_LISP_FINAL_PARAMETERS="-repl"
                 NIX_LISP_FASL_TYPE="fas"
-		;;
-	lx86cl64)
-		NIX_LISP_LOAD_FILE="-l"
-		NIX_LISP_EXEC_CODE="-e"
+                ;;
+        lx86cl64)
+                NIX_LISP_LOAD_FILE="-l"
+                NIX_LISP_EXEC_CODE="-e"
                 NIX_LISP_QUIT="(quit)"
                 NIX_LISP_NODEBUG='-b'
-		NIX_LISP_FINAL_PARAMETERS=
+                NIX_LISP_FINAL_PARAMETERS=
                 NIX_LISP_FASL_TYPE="lx64fsl"
-		;;
-	lx86cl)
-		NIX_LISP_LOAD_FILE="-l"
-		NIX_LISP_EXEC_CODE="-e"
+                ;;
+        lx86cl)
+                NIX_LISP_LOAD_FILE="-l"
+                NIX_LISP_EXEC_CODE="-e"
                 NIX_LISP_QUIT="(quit)"
                 NIX_LISP_NODEBUG='-b'
-		NIX_LISP_FINAL_PARAMETERS=
+                NIX_LISP_FINAL_PARAMETERS=
                 NIX_LISP_FASL_TYPE="lx32fsl"
-		;;
-	abcl)
-		NIX_LISP_LOAD_FILE="--load"
-		NIX_LISP_EXEC_CODE="--eval"
+                ;;
+        abcl)
+                NIX_LISP_LOAD_FILE="--load"
+                NIX_LISP_EXEC_CODE="--eval"
                 NIX_LISP_QUIT="(quit)"
                 NIX_LISP_NODEBUG=''
-		NIX_LISP_FINAL_PARAMETERS=
+                NIX_LISP_FINAL_PARAMETERS=
                 NIX_LISP_FASL_TYPE="abcl"
-		;;
+                ;;
 esac
 
 NIX_LISP_ASDF_REGISTRY_CODE="
@@ -127,8 +127,8 @@ eval "$NIX_LISP_PRELAUNCH_HOOK"
 
 if [ -z "$NIX_LISP_SKIP_CODE" ]; then
     "$NIX_LISP_COMMAND" $NIX_LISP_EARLY_OPTIONS \
-	                $NIX_LISP_EXEC_CODE "${NIX_LISP_ASDF_LOAD:-"(load \"$NIX_LISP_ASDF/lib/common-lisp/asdf/build/asdf.$NIX_LISP_FASL_TYPE\")"}" \
-	                $NIX_LISP_EXEC_CODE "$NIX_LISP_ASDF_REGISTRY_CODE" \
-	                ${NIX_LISP_FINAL_PARAMETERS[*]:+"${NIX_LISP_FINAL_PARAMETERS[@]}"} \
-	                "$@"
+                        $NIX_LISP_EXEC_CODE "${NIX_LISP_ASDF_LOAD:-"(load \"$NIX_LISP_ASDF/lib/common-lisp/asdf/build/asdf.$NIX_LISP_FASL_TYPE\")"}" \
+                        $NIX_LISP_EXEC_CODE "$NIX_LISP_ASDF_REGISTRY_CODE" \
+                        ${NIX_LISP_FINAL_PARAMETERS[*]:+"${NIX_LISP_FINAL_PARAMETERS[@]}"} \
+                        "$@"
 fi
diff --git a/pkgs/development/lisp-modules/from-quicklisp/asdf-description.sh b/pkgs/development/lisp-modules/from-quicklisp/asdf-description.sh
index 6c240d15c76e3..bdb5981bf4fb3 100755
--- a/pkgs/development/lisp-modules/from-quicklisp/asdf-description.sh
+++ b/pkgs/development/lisp-modules/from-quicklisp/asdf-description.sh
@@ -11,6 +11,6 @@
 name="$1"
 
 sbcl --noinform --load "$NIX_QUICKLISP_DIR"/setup.lisp --eval "(ql:quickload :$name)" \
-	--eval "(format t \"~a~%\" (or (asdf::system-description (asdf::find-system \"$name\")) \"\"))" \
-	--eval '(quit)' --script |
+    --eval "(format t \"~a~%\" (or (asdf::system-description (asdf::find-system \"$name\")) \"\"))" \
+    --eval '(quit)' --script |
     tee /dev/stderr | tail -n 1
diff --git a/pkgs/development/lisp-modules/from-quicklisp/barebones-quicklisp-expression.sh b/pkgs/development/lisp-modules/from-quicklisp/barebones-quicklisp-expression.sh
index d2d846b78f2bb..f8bae8997272c 100755
--- a/pkgs/development/lisp-modules/from-quicklisp/barebones-quicklisp-expression.sh
+++ b/pkgs/development/lisp-modules/from-quicklisp/barebones-quicklisp-expression.sh
@@ -122,8 +122,8 @@ url="${ql_src##* }"
   with (import <nixpkgs> {});
       fetchdarcs {
         url=''$url'';
-	rev=''$version'';
-	sha256=''0000000000000000000000000000000000000000000000000000000000000000'';
+    rev=''$version'';
+    sha256=''0000000000000000000000000000000000000000000000000000000000000000'';
     }" | nix-instantiate - | tail -n 1 |
     xargs nix-store -r 2>&1 | tee /dev/stderr | grep 'instead has' | tail -n 1 |
     sed -e 's/.* instead has .//;s/[^0-9a-z].*//')
@@ -149,7 +149,7 @@ url="${ql_src##* }"
 }
 
 if [ "$ql_src" = '{"error":"Not Found"}' ]; then
-	echo "# $name: not found"
+    echo "# $name: not found"
 else
 cat << EOF | grep -Ev '^[ ]+$'
 
diff --git a/pkgs/development/perl-modules/expression-generator/filtered-requirements.sh b/pkgs/development/perl-modules/expression-generator/filtered-requirements.sh
index 98c01508fd5a3..2e3509d68c12c 100755
--- a/pkgs/development/perl-modules/expression-generator/filtered-requirements.sh
+++ b/pkgs/development/perl-modules/expression-generator/filtered-requirements.sh
@@ -3,13 +3,13 @@
 source lib-cache.sh;
 
 print_reqs() {
-	module_name="$1";
+    module_name="$1";
 
-	./requirements.sh "$1"| while read; do
-		if let "$(./source-download-link.sh "${REPLY}" | wc -c)" && [ perl != "$REPLY" ]; then
-			echo "$REPLY";
-		fi;
-	done;
+    ./requirements.sh "$1"| while read; do
+        if let "$(./source-download-link.sh "${REPLY}" | wc -c)" && [ perl != "$REPLY" ]; then
+            echo "$REPLY";
+        fi;
+    done;
 }
 
 module_name="$1";
diff --git a/pkgs/development/perl-modules/expression-generator/full-requirements.sh b/pkgs/development/perl-modules/expression-generator/full-requirements.sh
index 29ed83668ed55..91218f36f609b 100755
--- a/pkgs/development/perl-modules/expression-generator/full-requirements.sh
+++ b/pkgs/development/perl-modules/expression-generator/full-requirements.sh
@@ -3,19 +3,19 @@
 source lib-cache.sh;
 
 print_requirements () {
-	module_name="$1";
+    module_name="$1";
 
-	./requirements.sh "$module_name" | while read; do
-		echo "$REPLY";
-		print_reqs_cache "$REPLY";
-	done | sort | uniq
+    ./requirements.sh "$module_name" | while read; do
+        echo "$REPLY";
+        print_reqs_cache "$REPLY";
+    done | sort | uniq
 };
 
 print_reqs_cache () {
-	module_name="$1";
-	module_basename="${module_name//::/-}";
-	
-	cached_output print_requirements "$module_basename" "$module_name" "full.deps";
+    module_name="$1";
+    module_basename="${module_name//::/-}";
+
+    cached_output print_requirements "$module_basename" "$module_name" "full.deps";
 };
 
 print_reqs_cache "$@";
diff --git a/pkgs/development/perl-modules/expression-generator/grab-url.sh b/pkgs/development/perl-modules/expression-generator/grab-url.sh
index 809cf87fcebf1..8935cad8cefe3 100755
--- a/pkgs/development/perl-modules/expression-generator/grab-url.sh
+++ b/pkgs/development/perl-modules/expression-generator/grab-url.sh
@@ -3,13 +3,13 @@
 source lib-cache.sh
 
 get_file() {
-	url="$1";
+    url="$1";
 
-	if [ -n "$url" ]; then 
-		curl "$1";
-	else
-		echo -n;
-	fi;
+    if [ -n "$url" ]; then
+        curl "$1";
+    else
+        echo -n;
+    fi;
 }
 
 url="$1";
@@ -17,4 +17,3 @@ name="$2";
 name=${name:-$(basename "$url")}
 
 cached_output get_file "${name%%.*}" "$url" "${name#*.}"
-
diff --git a/pkgs/development/perl-modules/expression-generator/lib-cache.sh b/pkgs/development/perl-modules/expression-generator/lib-cache.sh
index 7473e2d1c15ed..65095144bcd68 100644
--- a/pkgs/development/perl-modules/expression-generator/lib-cache.sh
+++ b/pkgs/development/perl-modules/expression-generator/lib-cache.sh
@@ -4,16 +4,15 @@
 # Third argument: argument to command
 # Fourth argument: cache type
 cached_output () {
-	cmd="$1";
-	basename="$2";
-	arg="$3";
-	ext="$4";
-	
-	if ! [ -e "cache-${ext//./-}/${basename}.${ext}" ]; then
-		mkdir -p "cache-${ext//./-}";
-		$cmd $arg > "cache-${ext//./-}/${basename}.${ext}";
-	fi;
+    cmd="$1";
+    basename="$2";
+    arg="$3";
+    ext="$4";
 
-	cat "cache-${ext//./-}/${basename}.${ext}";
-}
+    if ! [ -e "cache-${ext//./-}/${basename}.${ext}" ]; then
+        mkdir -p "cache-${ext//./-}";
+        $cmd $arg > "cache-${ext//./-}/${basename}.${ext}";
+    fi;
 
+    cat "cache-${ext//./-}/${basename}.${ext}";
+}
diff --git a/pkgs/development/perl-modules/expression-generator/requirements.sh b/pkgs/development/perl-modules/expression-generator/requirements.sh
index 60ee68d99adaf..19b24c55a8eed 100755
--- a/pkgs/development/perl-modules/expression-generator/requirements.sh
+++ b/pkgs/development/perl-modules/expression-generator/requirements.sh
@@ -6,12 +6,12 @@ module_name="$1";
 module_basename="${1//::/-}";
 
 print_requirements () {
-	module_name="$1";
-	
-	./retrieve-meta-yaml.sh "$module_name" |
-		sed -re '1,/^requires:/d; /^[a-z]/,$d; s@^\s*@@; s@:\s.*@@';
-	./retrieve-meta-yaml.sh "$module_name" |
-		sed -re '1,/^build_requires:/d; /^[a-z]/,$d; s@^\s*@@; s@:\s.*@@';
+    module_name="$1";
+
+    ./retrieve-meta-yaml.sh "$module_name" |
+        sed -re '1,/^requires:/d; /^[a-z]/,$d; s@^\s*@@; s@:\s.*@@';
+    ./retrieve-meta-yaml.sh "$module_name" |
+        sed -re '1,/^build_requires:/d; /^[a-z]/,$d; s@^\s*@@; s@:\s.*@@';
 };
 
 cached_output print_requirements "$module_basename" "$module_name" "direct.deps";
diff --git a/pkgs/development/perl-modules/expression-generator/retrieve-file-link.sh b/pkgs/development/perl-modules/expression-generator/retrieve-file-link.sh
index a9cf0d94e0d3f..c8ec5df11b7dd 100755
--- a/pkgs/development/perl-modules/expression-generator/retrieve-file-link.sh
+++ b/pkgs/development/perl-modules/expression-generator/retrieve-file-link.sh
@@ -6,9 +6,9 @@ file_name="$2";
 version_regexp="${module_basename}(-[0-9.a-z]+){0,1}";
 author_regexp="[A-Z0-9]+";
 
-./retrieve-modulepage.sh "$module_basename" | 
-	egrep "[<]a href=\"[a-z0-9/]*/(${author_regexp}/){0,1}${version_regexp}/${file_name}" |
-	sed -re "s@.*href=\"@@; s@\".*@@" |
-	sed -re 's@^/@http://search.cpan.org/@';
+./retrieve-modulepage.sh "$module_basename" |
+    egrep "[<]a href=\"[a-z0-9/]*/(${author_regexp}/){0,1}${version_regexp}/${file_name}" |
+    sed -re "s@.*href=\"@@; s@\".*@@" |
+    sed -re 's@^/@http://search.cpan.org/@';
 
 echo "$link_line";
diff --git a/pkgs/development/perl-modules/expression-generator/retrieve-meta-yaml.sh b/pkgs/development/perl-modules/expression-generator/retrieve-meta-yaml.sh
index 2c85d45691f09..3b162ebe693fe 100755
--- a/pkgs/development/perl-modules/expression-generator/retrieve-meta-yaml.sh
+++ b/pkgs/development/perl-modules/expression-generator/retrieve-meta-yaml.sh
@@ -3,11 +3,11 @@
 source lib-cache.sh;
 
 print_meta_yaml () {
-	module_name="$1";
-	module_basename="${module_name//::/-}";
+    module_name="$1";
+    module_basename="${module_name//::/-}";
 
-	./grab-url.sh "$(./retrieve-file-link.sh "$module_basename" "META.yml")" \
-		"${module_basename}.meta.yml";
+    ./grab-url.sh "$(./retrieve-file-link.sh "$module_basename" "META.yml")" \
+        "${module_basename}.meta.yml";
 };
 
 module_name="$1";
diff --git a/pkgs/development/perl-modules/expression-generator/source-download-link.sh b/pkgs/development/perl-modules/expression-generator/source-download-link.sh
index 575f47629c26b..779d131961f07 100755
--- a/pkgs/development/perl-modules/expression-generator/source-download-link.sh
+++ b/pkgs/development/perl-modules/expression-generator/source-download-link.sh
@@ -6,12 +6,12 @@ module_name="$1";
 module_basename="${module_name//::/-}";
 
 write_link() {
-	module_basename="$1";
+    module_basename="$1";
 
-	./retrieve-modulepage.sh "$module_basename" | 
-		grep -A 2 "This Release" |
-		grep href |
-		sed -re 's/.*href="//; s/".*//; s@^/@http://search.cpan.org/@';
+    ./retrieve-modulepage.sh "$module_basename" |
+        grep -A 2 "This Release" |
+        grep href |
+        sed -re 's/.*href="//; s/".*//; s@^/@http://search.cpan.org/@';
 }
 
 cached_output write_link "$module_basename" "$module_basename" src.link;
diff --git a/pkgs/development/perl-modules/expression-generator/write-nix-expression.sh b/pkgs/development/perl-modules/expression-generator/write-nix-expression.sh
index cfe1506640b31..9f5cdb9142eb2 100755
--- a/pkgs/development/perl-modules/expression-generator/write-nix-expression.sh
+++ b/pkgs/development/perl-modules/expression-generator/write-nix-expression.sh
@@ -5,16 +5,16 @@ cd $(dirname $0);
 source lib-cache.sh;
 
 print_expression () {
-	module_name="$1";
-	module_basename="${module_name//::/-}";
-	module_compressedname="perl${module_name//::/}";
-	sourcelink="$(./source-download-link.sh "${module_name}")";
-	version_name="${sourcelink%.tar.*}";
-	version_name="${version_name##*/}";
-	dependencies="$(./filtered-requirements.sh "$module_name" | sed -e 's/^/perl/; s/:://g' | xargs)";
-	source_hash=$(nix-prefetch-url "$sourcelink" 2>/dev/null);
-
-	cat <<EOF
+    module_name="$1";
+    module_basename="${module_name//::/-}";
+    module_compressedname="perl${module_name//::/}";
+    sourcelink="$(./source-download-link.sh "${module_name}")";
+    version_name="${sourcelink%.tar.*}";
+    version_name="${version_name##*/}";
+    dependencies="$(./filtered-requirements.sh "$module_name" | sed -e 's/^/perl/; s/:://g' | xargs)";
+    source_hash=$(nix-prefetch-url "$sourcelink" 2>/dev/null);
+
+    cat <<EOF
 
   ${module_compressedname} = import ../development/perl-modules/generic perl {
     name = "${version_name}";
diff --git a/pkgs/development/tools/build-managers/tup/setup-hook.sh b/pkgs/development/tools/build-managers/tup/setup-hook.sh
index 5bf64ae59d35d..b7962c80d4692 100644
--- a/pkgs/development/tools/build-managers/tup/setup-hook.sh
+++ b/pkgs/development/tools/build-managers/tup/setup-hook.sh
@@ -1,27 +1,27 @@
 #!/bin/sh
 
 tupConfigurePhase() {
-	runHook preConfigure
-
-	echo -n CONFIG_TUP_ARCH= >> tup.config
-	case "$system" in
-	"i686-*")      echo i386 >> tup.config;;
-	"x86_64-*")    echo x86_64 >> tup.config;;
-	"powerpc-*")   echo powerpc >> tup.config;;
-	"powerpc64-*") echo powerpc64 >> tup.config;;
-	"ia64-*")      echo ia64 >> tup.config;;
-	"alpha-*")     echo alpha >> tup.config;;
-	"sparc-*")     echo sparc >> tup.config;;
-	"aarch64-*")   echo arm64 >> tup.config;;
-	"arm*")        echo arm >> tup.config;;
-	esac
-
-	echo "${tupConfig-}" >> tup.config
-
-	tup init
-	tup generate tupBuild.sh
-
-	runHook postConfigure
+    runHook preConfigure
+
+    echo -n CONFIG_TUP_ARCH= >> tup.config
+    case "$system" in
+    "i686-*")      echo i386 >> tup.config;;
+    "x86_64-*")    echo x86_64 >> tup.config;;
+    "powerpc-*")   echo powerpc >> tup.config;;
+    "powerpc64-*") echo powerpc64 >> tup.config;;
+    "ia64-*")      echo ia64 >> tup.config;;
+    "alpha-*")     echo alpha >> tup.config;;
+    "sparc-*")     echo sparc >> tup.config;;
+    "aarch64-*")   echo arm64 >> tup.config;;
+    "arm*")        echo arm >> tup.config;;
+    esac
+
+    echo "${tupConfig-}" >> tup.config
+
+    tup init
+    tup generate tupBuild.sh
+
+    runHook postConfigure
 }
 
 if [ -z "${dontUseTupConfigure-}" -a -z "${configurePhase-}" ]; then
@@ -30,13 +30,13 @@ fi
 
 
 tupBuildPhase() {
-	runHook preBuild
+    runHook preBuild
 
-	pushd .
-	. tupBuild.sh
-	popd
+    pushd .
+    . tupBuild.sh
+    popd
 
-	runHook postBuild
+    runHook postBuild
 }
 
 if [ -z "${dontUseTupBuild-}" -a -z "${buildPhase-}" ]; then