treewide: Per RFC45, remove all unquoted URLs

pkgs/development/compilers/gcc/4.8/default.nix

@@ -89,7 +89,7 @@ let majorVersion = "4";
     # Antlr (optional) allows the Java `gjdoc' tool to be built.  We want a
     # binary distribution here to allow the whole chain to be bootstrapped.
     javaAntlr = fetchurl {
-      url = https://www.antlr.org/download/antlr-4.4-complete.jar;
+      url = "https://www.antlr.org/download/antlr-4.4-complete.jar";
       sha256 = "02lda2imivsvsis8rnzmbrbp8rh1kb8vmq4i67pqhkwz7lf8y6dz";
     };
 
@@ -278,7 +278,7 @@ stdenv.mkDerivation ({
   inherit (stdenv) is64bit;
 
   meta = {
-    homepage = https://gcc.gnu.org/;
+    homepage = "https://gcc.gnu.org/";
     license = stdenv.lib.licenses.gpl3Plus;  # runtime support libraries are typically LGPLv3+
     description = "GNU Compiler Collection, version ${version}"
       + (if stripped then "" else " (with debugging info)");

pkgs/development/compilers/gcc/4.9/default.nix

@@ -100,7 +100,7 @@ let majorVersion = "4";
     # Antlr (optional) allows the Java `gjdoc' tool to be built.  We want a
     # binary distribution here to allow the whole chain to be bootstrapped.
     javaAntlr = fetchurl {
-      url = https://www.antlr.org/download/antlr-4.4-complete.jar;
+      url = "https://www.antlr.org/download/antlr-4.4-complete.jar";
       sha256 = "02lda2imivsvsis8rnzmbrbp8rh1kb8vmq4i67pqhkwz7lf8y6dz";
     };
 
@@ -289,7 +289,7 @@ stdenv.mkDerivation ({
   inherit (stdenv) is64bit;
 
   meta = {
-    homepage = https://gcc.gnu.org/;
+    homepage = "https://gcc.gnu.org/";
     license = stdenv.lib.licenses.gpl3Plus;  # runtime support libraries are typically LGPLv3+
     description = "GNU Compiler Collection, version ${version}"
       + (if stripped then "" else " (with debugging info)");

pkgs/development/compilers/gcc/6/default.nix

@@ -82,7 +82,7 @@ let majorVersion = "6";
     # Antlr (optional) allows the Java `gjdoc' tool to be built.  We want a
     # binary distribution here to allow the whole chain to be bootstrapped.
     javaAntlr = fetchurl {
-      url = https://www.antlr.org/download/antlr-4.4-complete.jar;
+      url = "https://www.antlr.org/download/antlr-4.4-complete.jar";
       sha256 = "02lda2imivsvsis8rnzmbrbp8rh1kb8vmq4i67pqhkwz7lf8y6dz";
     };
 
@@ -302,7 +302,7 @@ stdenv.mkDerivation ({
   inherit (stdenv) is64bit;
 
   meta = {
-    homepage = https://gcc.gnu.org/;
+    homepage = "https://gcc.gnu.org/";
     license = stdenv.lib.licenses.gpl3Plus;  # runtime support libraries are typically LGPLv3+
     description = "GNU Compiler Collection, version ${version}"
       + (if stripped then "" else " (with debugging info)");

pkgs/development/compilers/gcc/7/default.nix

@@ -260,7 +260,7 @@ stdenv.mkDerivation ({
   inherit (stdenv) is64bit;
 
   meta = {
-    homepage = https://gcc.gnu.org/;
+    homepage = "https://gcc.gnu.org/";
     license = stdenv.lib.licenses.gpl3Plus;  # runtime support libraries are typically LGPLv3+
     description = "GNU Compiler Collection, version ${version}"
       + (if stripped then "" else " (with debugging info)");

pkgs/development/compilers/gcc/8/default.nix

@@ -247,7 +247,7 @@ stdenv.mkDerivation ({
   inherit (stdenv) is64bit;
 
   meta = {
-    homepage = https://gcc.gnu.org/;
+    homepage = "https://gcc.gnu.org/";
     license = stdenv.lib.licenses.gpl3Plus;  # runtime support libraries are typically LGPLv3+
     description = "GNU Compiler Collection, version ${version}"
       + (if stripped then "" else " (with debugging info)");

pkgs/development/compilers/gcc/9/default.nix

@@ -246,7 +246,7 @@ stdenv.mkDerivation ({
   inherit (stdenv) is64bit;
 
   meta = {
-    homepage = https://gcc.gnu.org/;
+    homepage = "https://gcc.gnu.org/";
     license = stdenv.lib.licenses.gpl3Plus;  # runtime support libraries are typically LGPLv3+
     description = "GNU Compiler Collection, version ${version}"
       + (if stripped then "" else " (with debugging info)");