So when using Nix as a build tool, you can just say `nix-build' and it will build the top-level derivation defined in `default.nix'.
		
			
				
	
	
		
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			1.3 KiB
		
	
	
	
		
			Text
		
	
	
	
	
	
			
		
		
	
	
			69 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			Text
		
	
	
	
	
	
#! @shell@ -e
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nixExpr=$1
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extraArgs=
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addDrvLink=0
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addOutLink=1
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trap 'rm -f ./.nix-build-tmp-*' EXIT
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# Process the arguments.
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exprs=
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for i in "$@"; do
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    case "$i" in
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        --help)
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            echo "syntax: $0 [NIX-EXPR...]" >&2
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            exit 0
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            ;;
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        --add-drv-link)
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            addDrvLink=1
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            ;;
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        --no-link)
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            addOutLink=0
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            ;;
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        -*)
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            extraArgs="$extraArgs $i"
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            ;;
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        *)
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            exprs="$exprs $i"
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            ;;
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    esac
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done
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if test -z "$exprs"; then
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    exprs="./default.nix"
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fi
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# Process the specified Nix expressions.
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for i in $exprs; do
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    # Instantiate the Nix expression.
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    prefix=
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    if test "$addDrvLink" = 0; then prefix=.nix-build-tmp-; fi
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    storeExprs=$(@bindir@/nix-instantiate \
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        --add-root ./${prefix}derivation --indirect \
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        "$i")
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    for j in $storeExprs; do
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        echo "store expression is $(readlink "$j")" >&2
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    done
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    # Build the resulting store derivation.
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    prefix=
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    if test "$addOutLink" = 0; then prefix=.nix-build-tmp-; fi
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    outPaths=$(@bindir@/nix-store \
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        --add-root ./${prefix}result --indirect \
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        -rv $extraArgs $storeExprs)
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    for j in $outPaths; do
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        echo "$(readlink "$j")"
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    done
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done            
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