Hi Valter, I started looking at this as it had passed QA, although while it arguably hadn't made the situation worse, the package looks to have been failing to build before, and it was still failing to build with these changes. guix lint also was reporting a load of new issues: → ./pre-inst-env guix lint emilua gnu/packages/lua.scm:1188:8: emilua@0.4.3: label 'fmt-8' does not match package name 'fmt' gnu/packages/lua.scm:1188:8: emilua@0.4.3: label 'gcc-12' does not match package name 'gcc' gnu/packages/lua.scm:1151:8: emilua@0.4.3: invalid phase clause gnu/packages/lua.scm:1151:3: emilua@0.4.3: tabulation on line 1151, column 3 gnu/packages/lua.scm:1155:11: emilua@0.4.3: tabulation on line 1155, column 11 gnu/packages/lua.scm:1156:11: emilua@0.4.3: tabulation on line 1156, column 11 gnu/packages/lua.scm:1157:11: emilua@0.4.3: tabulation on line 1157, column 11 gnu/packages/lua.scm:1161:0: emilua@0.4.3: trailing white space on line 1161 gnu/packages/lua.scm:1166:0: emilua@0.4.3: line 1166 is way too long (95 characters) gnu/packages/lua.scm:1167:0: emilua@0.4.3: trailing white space on line 1167 gnu/packages/lua.scm:1174:6: emilua@0.4.3: tabulation on line 1174, column 6 gnu/packages/lua.scm:1175:6: emilua@0.4.3: tabulation on line 1175, column 6 gnu/packages/lua.scm:1176:6: emilua@0.4.3: tabulation on line 1176, column 6 gnu/packages/lua.scm:1179:0: emilua@0.4.3: trailing white space on line 1179 gnu/packages/lua.scm:1188:3: emilua@0.4.3: tabulation on line 1188, column 3 gnu/packages/lua.scm:1196:0: emilua@0.4.3: parentheses feel lonely, move to the previous or next line gnu/packages/lua.scm:1203:25: emilua@0.4.3: tabulation on line 1203, column 25 gnu/packages/lua.scm:1204:0: emilua@0.4.3: trailing white space on line 1204 gnu/packages/lua.scm:1204:0: emilua@0.4.3: line 1204 is way too long (137 characters) gnu/packages/lua.scm:1205:0: emilua@0.4.3: trailing white space on line 1205 gnu/packages/lua.scm:1206:0: emilua@0.4.3: tabulation on line 1206, column 0 gnu/packages/lua.scm:1207:0: emilua@0.4.3: tabulation on line 1207, column 0 gnu/packages/lua.scm:1208:0: emilua@0.4.3: tabulation on line 1208, column 0 gnu/packages/lua.scm:1209:0: emilua@0.4.3: tabulation on line 1209, column 0 gnu/packages/lua.scm:1210:0: emilua@0.4.3: tabulation on line 1210, column 0 gnu/packages/lua.scm:1211:0: emilua@0.4.3: tabulation on line 1211, column 0 gnu/packages/lua.scm:1212:0: emilua@0.4.3: tabulation on line 1212, column 0 gnu/packages/lua.scm:1213:0: emilua@0.4.3: tabulation on line 1213, column 0 gnu/packages/lua.scm:1214:0: emilua@0.4.3: tabulation on line 1214, column 0 gnu/packages/lua.scm:1215:0: emilua@0.4.3: tabulation on line 1215, column 0 I've now gone through and fixed all these, the "invalid build clause" as mentioned by guix lint was what was causing the package to fail to build. Luckily, I also saw the patch posted to #65515, so I've merged those changes in here. Other small tweaks I made include using with-directory-excursion in the arguments, and removing gawk as a native-input (I think the build system provides gawk). I've pushed this to master as 10bc07671e2a3a699d4f56e405f50d766323319a. Chris