Merge base and update NSP into a single file. We used to call it slipstream when we used windows

merge-nsp.sh

mkdir .switch base update exefs romfs nca nsp

basensp=diablo3.nsp
updatensp=diablo3u.nsp

cp .local/share/yuzu/keys/prod.keys .switch/
sed 's/|[^|]*$//' .local/share/yuzu/keys/title.keys | sed 's/|/=/' > .switch/title.keys

hactool -t pfs0 $basensp --outdir base
hactool -t pfs0 $updatensp --outdir update

for i in base/*.nca; do type=$(hactool --disablekeywarns $i | grep -oP "(?<=Content Type:\s{23}).*"); echo $i $type; if [ $type == "Program" ]; then basenca=$i; fi; done

for i in update/*.nca; do type=$(hactool --disablekeywarns $i | grep -oP "(?<=Content Type:\s{23}).*"); echo $i $type; if [ $type == "Program" ]; then updatenca=$i; elif [ $type == "Control" ]; then controlnca=$i; fi; done

# parse Title ID from base program NCA
titleid=$(hactool --disablekeywarns $basenca | grep -oP "(?<=Title ID:\s{27}).*")

# extract base and update NCAs into romfs end exefs
hactool --basenca $basenca $updatenca --romfsdir romfs --exefsdir exefs

# pack romfs and exefs into one NCA
hacpack --type nca --ncatype program --plaintext --exefsdir=exefs --romfsdir romfs --titleid $titleid --outdir nca
patchednca=$(ls nca)

# generate meta NCA from patched NCA and control NCA
hacpack --type="nca" --ncatype="meta" --titletype="application" --programnca="nca/$patchednca" --controlnca="$controlnca" --titleid="$titleid" --outdir="nca"

# pack all three NCAs into an NSP
hacpack --type="nsp" --ncadir="nca" --titleid="$titleid" --outdir="nsp"

./yuzu-mainline-20230623-3a991f3ae.AppImage -f -g /home/dev/diablo3c.nsp
Unhandled SIGSEGV at rip 0x00000000008d4023
Segmentation fault (core dumped)

SOMEHOW I suspected that