Fetch all source files before processing easystack file #1540

Job	Run time
build (x86_64/amd/zen2/Azure-CentOS7-7V12)	29s
build (riscv64/sifive/premier-Ubuntu24)	43s
build (x86_64/amd/zen5/RUG-AlmaLinux8-9575F)	25s
build (riscv64/spacemit/bananaf3-Armbian)	24s
build (x86_64/intel/sapphirerapids/AWS-Rocky8-8488C)	26s
build (x86_64/amd/zen4/Shinx-RHEL8-9654)	25s
build (x86_64/amd/zen4/Azure-Alma8-9V33X)	27s
build (x86_64/amd/zen5/AWS-Rocky9-9R45)	27s
build (aarch64/neoverse_n1/AWS-awslinux-graviton2)	43s
build (x86_64/intel/haswell/archspec-linux-E5-2680-v3)	26s
build (aarch64/nvidia/grace/Jureca-Rocky95)	41s
build (aarch64/a64fx/Deucalion-Rocky85)	26s
build (x86_64/amd/zen3/Azure-CentOS7-7V73X)	31s
build (riscv64/spacemit/bananaf3-k6.6)	31s
build (aarch64/google/axion/GCP-axion)	28s
build (aarch64/neoverse_n1/Azure-Ubuntu20-Altra)	26s
build (x86_64/intel/skylake_avx512/archspec-linux-6132)	25s
build (aarch64/neoverse_v1/AWS-awslinux-graviton3)	25s
	8m 48s

use empty list if there are no additions in an easystack file · EESSI/software-layer-scripts@a69e383 · GitHub